Basic Tissues and Epithelial Tissue Overview
98 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary protein that composes reticular fibres?

  • Collagen
  • Elastin
  • Keratin
  • Reticulin (correct)

Which type of connective tissue is primarily found in the embryo and differentiates into other connective tissue types?

  • Mucous connective tissue
  • Mesenchyme (correct)
  • Cartilage
  • Adipose tissue

Where are reticular fibres most abundantly found?

  • Epithelial layers
  • Nervous tissues
  • Muscle tissues
  • Haemopoietic tissue (correct)

Which of the following is NOT classified as a type of loose connective tissue?

<p>Fibrocartilage (A)</p> Signup and view all the answers

What characterizes loose connective tissue?

<p>Loose arrangement of protein fibres (A)</p> Signup and view all the answers

What is one of the primary functions of areolar tissue?

<p>Cushions organs and holds tissue fluid (A)</p> Signup and view all the answers

Where is areolar tissue primarily located in the body?

<p>Under all epithelia (D)</p> Signup and view all the answers

What type of tissue is modified areolar tissue known as?

<p>Adipose tissue (D)</p> Signup and view all the answers

Which cells are primarily responsible for phagocytizing bacteria in areolar tissue?

<p>Macrophages (A)</p> Signup and view all the answers

What is a characteristic of the matrix found in adipose tissue?

<p>Contains large numbers of adipose cells (A)</p> Signup and view all the answers

What defines epithelial tissue in terms of its cellular arrangement?

<p>It has a high degree of cellularity with minimal space between cells. (B)</p> Signup and view all the answers

Which function is NOT associated with epithelial tissue?

<p>Support and structure (B)</p> Signup and view all the answers

Which statement is correct regarding the classification of epithelial tissue?

<p>Epithelial tissue is classified based on cell shape and arrangement. (D)</p> Signup and view all the answers

Which characteristic of epithelial tissue allows it to rapidly regenerate?

<p>It has a high degree of cellularity. (D)</p> Signup and view all the answers

Which type of epithelial cell is characterized as being taller than wide?

<p>Columnar (C)</p> Signup and view all the answers

What is the primary function of collagen fibers in connective tissue?

<p>To provide tensile strength and resist stretching (D)</p> Signup and view all the answers

What characterizes simple epithelium?

<p>A single layer of cells (C)</p> Signup and view all the answers

Which cell type in connective tissue is primarily responsible for producing antibodies?

<p>Plasma cell (B)</p> Signup and view all the answers

What does the term 'pseudostratified' mean in relation to epithelial tissue?

<p>It appears to have multiple layers but is actually a single layer. (D)</p> Signup and view all the answers

Which of the following is NOT a component of the extracellular matrix?

<p>Leukocyte (C)</p> Signup and view all the answers

Where can simple squamous epithelium typically be found?

<p>In the lining of the heart and blood vessels (D)</p> Signup and view all the answers

What type of connective tissue fibre is characterized by its ability to stretch and return to its original form?

<p>Elastic fibre (B)</p> Signup and view all the answers

Which connective tissue cell type is involved in the release of histamine?

<p>Mast cells (A)</p> Signup and view all the answers

What is the primary function of simple squamous epithelium?

<p>Allows material to pass through by diffusion and filtration (A)</p> Signup and view all the answers

Which type of ground substance is known for its role in connective tissue?

<p>Glycosaminoglycans (B)</p> Signup and view all the answers

What distinguishes stratified epithelium from simple epithelium?

<p>Stratified epithelium has multiple layers of cells. (A)</p> Signup and view all the answers

Which type of epithelium is described as having cells that are in contact with the basement membrane but do not all reach the surface?

<p>Pseudostratified epithelium (B)</p> Signup and view all the answers

What is the primary role of fibroblasts in connective tissue?

<p>Produce protein fibers and ground substance (C)</p> Signup and view all the answers

Which connective tissue cell type is responsible for storing energy?

<p>Adipocytes (B)</p> Signup and view all the answers

What is a common location for simple squamous epithelium?

<p>In the air sacs of lungs (D)</p> Signup and view all the answers

Which characteristic is NOT typical of stratified epithelium?

<p>It allows for diffusion and filtration. (D)</p> Signup and view all the answers

What is the primary function of dense regular connective tissue?

<p>To connect bones to muscles (A)</p> Signup and view all the answers

Which characteristic is true for skeletal muscle tissue?

<p>Striated, tubular, and multi-nucleated (C)</p> Signup and view all the answers

Which of the following accurately describes smooth muscle?

<p>Non-striated, spindle-shaped, and involuntary (B)</p> Signup and view all the answers

What is the major cell type found in dense regular connective tissue?

<p>Fibroblasts (A)</p> Signup and view all the answers

What role do chondrocytes play in specialized connective tissues?

<p>Secrete fine collagen fibres for smooth joint surfaces (A)</p> Signup and view all the answers

What is the primary composition of dense regular connective tissue?

<p>Primarily colagen fibres with few elastic fibres (D)</p> Signup and view all the answers

Which statement is NOT true regarding skeletal muscle fibers?

<p>They are smooth and spindle-shaped (B)</p> Signup and view all the answers

What function does dense regular connective tissue serve when it comes to stress?

<p>Withstands great tensile stress in one direction (C)</p> Signup and view all the answers

What is a key characteristic of epithelial tissue that distinguishes it from other tissue types?

<p>It demonstrates a high degree of cellularity with minimal interstitial space. (D)</p> Signup and view all the answers

Which characteristic is NOT associated with epithelial tissue?

<p>Presence of a robust extracellular matrix (B)</p> Signup and view all the answers

How is epithelial tissue primarily classified?

<p>According to the shape of the cells and the number of cell layers. (B)</p> Signup and view all the answers

Which of the following functions is typically NOT performed by epithelial tissue?

<p>Support of body organs (A)</p> Signup and view all the answers

Which of the following statements correctly describes the polarity of epithelial tissue?

<p>Epithelial tissue has an apical surface that faces free space and a basal surface that contacts the basement membrane. (C)</p> Signup and view all the answers

What characterizes the non-keratinized stratified squamous epithelium?

<p>Contains several cell layers with cuboidal/columnar basal cells. (B)</p> Signup and view all the answers

What is the primary function of keratinized stratified squamous epithelium?

<p>Provides protection against abrasion. (B)</p> Signup and view all the answers

Where can stratified cuboidal epithelium typically be found?

<p>In the largest ducts of sweat glands and salivary glands. (B)</p> Signup and view all the answers

Which of the following statements is true about the basal cells of stratified squamous epithelium?

<p>Basal cells undergo mitosis to produce superficial layers. (D)</p> Signup and view all the answers

Which of these best describes the appearance of keratinized surface cells?

<p>Flat and full of keratin. (C)</p> Signup and view all the answers

What is a key difference between keratinized and non-keratinized stratified squamous epithelium?

<p>Keratinized epithelium has dead, flattened surface cells. (D)</p> Signup and view all the answers

What kind of environment is keratinized stratified squamous epithelium best adapted to?

<p>Dry environments like the epidermis of the skin. (D)</p> Signup and view all the answers

What is a primary role of reticular fibres in the body?

<p>Forming a supportive framework for soft tissue organs (D)</p> Signup and view all the answers

Which of the following best describes the composition of reticular fibres?

<p>Consist of reticulin protein (B)</p> Signup and view all the answers

What type of connective tissue is indicated by the loose arrangement of protein fibres?

<p>Loose connective tissue (A)</p> Signup and view all the answers

Which connective tissue type is specifically abundant in haemopoietic tissue?

<p>Reticular connective tissue (B)</p> Signup and view all the answers

Which embryonic connective tissue is found in the umbilical cord during fetal development?

<p>Mucous (Wharton’s jelly) (D)</p> Signup and view all the answers

In what type of connective tissue do fibres have a dense arrangement, providing strong support and resistance to stretching?

<p>Dense regular connective tissue (D)</p> Signup and view all the answers

How do reticular fibres primarily support soft tissue organs?

<p>Through an extensive branching network (A)</p> Signup and view all the answers

What distinguishes mesenchyme from other connective tissues?

<p>It differentiates into all other connective tissue types (D)</p> Signup and view all the answers

Which type of connective tissue is primarily involved in the formation of new blood cells?

<p>Reticular connective tissue (B)</p> Signup and view all the answers

Which of the following functions is NOT associated with non-ciliated epithelial tissue?

<p>Propels mucus out of the respiratory tract (B)</p> Signup and view all the answers

What is a primary characteristic of transitional epithelium?

<p>It can stretch and allow distension. (B)</p> Signup and view all the answers

Where would you typically find ciliated columnar epithelium in the body?

<p>Lining of the trachea (A)</p> Signup and view all the answers

Which type of epithelial tissue is primarily involved in secreting mucus and is characterized by the presence of goblet cells?

<p>Pseudostratified columnar epithelium (B)</p> Signup and view all the answers

In which location would you find non-ciliated columnar epithelium?

<p>Large intestine (C)</p> Signup and view all the answers

Which of the following is NOT a characteristic of stratified cuboidal epithelium?

<p>Commonly found in the urinary bladder (D)</p> Signup and view all the answers

What is the primary role of ciliated epithelium in the respiratory tract?

<p>Propulsion of mucus (B)</p> Signup and view all the answers

Which of the following tissues is primarily responsible for stretching and reducing friction in the urinary system?

<p>Transitional epithelium (C)</p> Signup and view all the answers

What function does ciliated epithelial tissue serve in the uterus?

<p>Facilitating movement of mucus and debris (C)</p> Signup and view all the answers

Which of the following characteristics is NOT associated with epithelial tissue?

<p>Extensive vascularization (C)</p> Signup and view all the answers

Which classification of epithelial cells is characterized by cells that are as wide as they are tall?

<p>Cuboidal (C)</p> Signup and view all the answers

What primarily distinguishes stratified epithelium from simple epithelium?

<p>Number of cell layers (A)</p> Signup and view all the answers

Which of the following functions is NOT typically associated with epithelial tissue?

<p>Support (C)</p> Signup and view all the answers

Which statement correctly defines the shape of squamous epithelial cells?

<p>Wider than they are tall (B)</p> Signup and view all the answers

Which characteristic distinguishes keratinized stratified squamous epithelium from non-keratinized type?

<p>Surface cells are dead and filled with keratin (D)</p> Signup and view all the answers

In which anatomical regions is keratinized stratified squamous epithelium primarily found?

<p>Skin and respiratory system (A)</p> Signup and view all the answers

What is the structural composition of stratified cuboidal epithelium?

<p>Two layers of cuboidal cells (B)</p> Signup and view all the answers

Which of the following glands predominantly contain stratified cuboidal epithelium?

<p>Sweat glands (A)</p> Signup and view all the answers

What is the role of basal cells in stratified squamous epithelium?

<p>Undergoing mitosis to renew surface layers (C)</p> Signup and view all the answers

What defines the surface cells of keratinized stratified squamous epithelium?

<p>Dead and filled with keratin (A)</p> Signup and view all the answers

What feature distinguishes pseudostratified columnar epithelium from simple epithelium?

<p>It has nuclei at different levels. (D)</p> Signup and view all the answers

Which type of glandular epithelium releases hormones directly into the bloodstream?

<p>Endocrine glands (D)</p> Signup and view all the answers

What characterizes merocrine secretion in glandular epithelium?

<p>Cells remain intact while secreting. (A)</p> Signup and view all the answers

What type of secretion is associated with mucous glands?

<p>Stable slimy secretion (B)</p> Signup and view all the answers

What is the primary function of ciliated pseudostratified columnar epithelium?

<p>Propulsion of mucus (C)</p> Signup and view all the answers

Which classification of glandular epithelium is characterized by its secretion through ducts onto body surfaces?

<p>Exocrine glands (D)</p> Signup and view all the answers

How is glandular epithelium primarily specialized?

<p>To produce and secrete substances (C)</p> Signup and view all the answers

What is a distinguishing feature of serous glands compared to mucous glands?

<p>They release a watery secretion. (A)</p> Signup and view all the answers

What role do goblet cells play in pseudostratified columnar epithelium?

<p>They secrete mucus. (B)</p> Signup and view all the answers

What type of epithelium stretches and allows distension by contained urine?

<p>Transitional epithelium (C)</p> Signup and view all the answers

Which type of epithelial lining is characterized by cilia and goblet cells that help in the secretion and propulsion of mucus?

<p>Pseudostratified columnar epithelium (C)</p> Signup and view all the answers

Which function is primarily associated with non-ciliated simple columnar epithelium found in the gastrointestinal tract?

<p>Absorption (C)</p> Signup and view all the answers

What is the main characteristic of stratified cuboidal epithelium?

<p>It provides a protective barrier in secretory ducts. (A)</p> Signup and view all the answers

Which lining is associated with the bronchi and is important for the respiratory function?

<p>Ciliated pseudostratified columnar epithelium (C)</p> Signup and view all the answers

Where would you most likely find non-ciliated simple cuboidal epithelium?

<p>Kidney tubules (C)</p> Signup and view all the answers

Which type of epithelium primarily provides protection against abrasion in the excretory ducts of some glands?

<p>Non-ciliated stratified squamous epithelium (B)</p> Signup and view all the answers

Which characteristic helps differentiate ciliated epithelium from non-ciliated epithelium?

<p>Presence of cilia and goblet cells (C)</p> Signup and view all the answers

Which epithelium would you find lining the ureter, bladder, and urethra?

<p>Transitional epithelium (B)</p> Signup and view all the answers

Flashcards

Epithelial Tissue

A tissue that covers body surfaces, lines body cavities, and forms glands.

Epithelial Tissue Characteristics

High cell density, rapid regeneration, and lack of blood vessels (avascular); cells have polarity.

Epithelial Tissue Function

Protection, absorption, sensory reception, ion transport, secretion, filtration, and forming slippery surfaces for movement.

Epithelial Tissue Classification

Classified by cell shape (squamous, cuboidal, columnar) and layers.

Signup and view all the flashcards

Squamous Epithelium

Flat, wide cells; often allowing for diffusion.

Signup and view all the flashcards

Simple Squamous Epithelium

A single layer of flattened cells with disc-shaped central nuclei.

Signup and view all the flashcards

Simple Epithelium

A single layer of cells.

Signup and view all the flashcards

Stratified Epithelium

More than one cell layer.

Signup and view all the flashcards

Pseudostratified Epithelium

Appears stratified, but is actually a single layer.

Signup and view all the flashcards

Location - Simple Squamous

Kidney glomeruli, air sacs of lungs, lining of heart, blood vessels, lymphatic vessels, and ventral body cavity lining (serosae).

Signup and view all the flashcards

Function - Simple Squamous

Allows materials to pass through by diffusion and filtration. Secretes lubricating substances in serosae.

Signup and view all the flashcards

Epithelial Layers

Can be either simple or stratified.

Signup and view all the flashcards

Epithelial Cell Types

Simple squamous, and others exist, are types of epithelial cells

Signup and view all the flashcards

Extracellular Matrix

The non-cellular material that provides a structural framework and support for connective tissues. It consists of protein fibers and ground substance.

Signup and view all the flashcards

Protein Fibers in the ECM

These are strong, fibrous proteins that provide structure and support to connective tissues. They include collagen, elastic, and reticular fibers.

Signup and view all the flashcards

Collagen Fibers

The most abundant protein fiber in the ECM. They are strong, unbranched, and run parallel. They provide tensile strength, flexibility, and resistance to stretching.

Signup and view all the flashcards

Elastic Fibers

These fibers are thinner than collagen and branch extensively, forming an irregular network. They allow tissues to stretch and return to their original shape.

Signup and view all the flashcards

Reticular Fibers

Fine, branched fibers composed of collagen. They form a delicate network that supports soft tissues like organs.

Signup and view all the flashcards

Ground Substance

The non-fibrous component of the ECM. It fills the spaces between cells and fibers, acting as a medium for cell communication and nutrient exchange.

Signup and view all the flashcards

Fibroblast/Fibrocyte

These cells are responsible for producing both the protein fibers and the ground substance of the extracellular matrix.

Signup and view all the flashcards

Mast Cells

These cells reside in connective tissues and release histamine, an important mediator of inflammation.

Signup and view all the flashcards

Reticular fibre function

Reticular fibres provide support and structure to soft tissues, especially in lymphatic tissues where they form the framework for the formation of blood cells.

Signup and view all the flashcards

What are the main types of Connective tissues?

Connective tissues can be broadly classified into two categories: Connective tissue proper (loose & dense) and specialized connective tissue (cartilage, bone, blood).

Signup and view all the flashcards

What is Mesenchyme?

Mesenchyme is an embryonic connective tissue that gives rise to all other connective tissue types. It is primarily found in embryos.

Signup and view all the flashcards

What is Wharton's jelly?

Wharton's jelly is a type of mucous connective tissue found in the umbilical cord during fetal development.

Signup and view all the flashcards

Areolar tissue

A type of connective tissue that cushions organs, provides support, transports tissue fluid, and contains immune cells like macrophages.

Signup and view all the flashcards

Adipose tissue

A type of connective tissue specialized for storing fat, providing insulation, and protecting organs.

Signup and view all the flashcards

Gel-like matrix in areolar tissue

A semi-solid substance within areolar tissue containing fibers like collagen and elastin, and cells like fibroblasts, macrophages, and mast cells.

Signup and view all the flashcards

Macrophages in areolar tissue

Immune cells in areolar tissue that engulf and destroy bacteria and cellular debris.

Signup and view all the flashcards

Where is areolar tissue found?

Areolar tissue is found under all epithelia, packaging organs, and forming the walls of blood vessels.

Signup and view all the flashcards

Dense Regular Connective Tissue

A type of connective tissue characterized by tightly packed, parallel collagen fibers, providing high tensile strength in one direction. Found in tendons, ligaments, and aponeuroses.

Signup and view all the flashcards

Tendons

Dense regular connective tissue that attaches muscles to bones.

Signup and view all the flashcards

Ligaments

Dense regular connective tissue that connects bones to bones, providing stability to joints.

Signup and view all the flashcards

Aponeuroses

Flat sheets of dense regular connective tissue that attach muscles to other muscles or to bones.

Signup and view all the flashcards

Cartilage

A specialized connective tissue composed of chondrocytes and a smooth, glassy matrix, providing support, flexibility, and shock absorption.

Signup and view all the flashcards

Skeletal Muscle

Striated, tubular, multi-nucleated muscle fibers that are voluntary and usually attached to the skeleton.

Signup and view all the flashcards

Smooth Muscle

Non-striated, spindle-shaped, uninucleated muscle fibers that are involuntary and found in the walls of internal organs.

Signup and view all the flashcards

Muscle Tissue Function

Responsible for movement, both voluntary and involuntary, by contracting and relaxing.

Signup and view all the flashcards

What are the four main tissue types?

The four main tissue types are epithelial, connective, muscle, and nervous tissue. Each type has a unique structure and function.

Signup and view all the flashcards

What are the functions of epithelial tissue?

Epithelial tissue has various functions, including protection, absorption, sensory reception, ion transport, secretion, filtration, and forming slippery surfaces for movement.

Signup and view all the flashcards

Connective tissue function

Connective tissue supports other tissues, provides structure, and helps with transport and defense.

Signup and view all the flashcards

Stratified Squamous Epithelium

A thick, multi-layered epithelium with flattened surface cells. It's found in areas subjected to abrasion, like the skin and lining of the mouth.

Signup and view all the flashcards

Keratinized Stratified Squamous Epithelium

A type of stratified squamous epithelium where the surface cells are filled with keratin, making the tissue tough and waterproof. It's found in the epidermis of the skin.

Signup and view all the flashcards

Non-Keratinized Stratified Squamous Epithelium

A type of stratified squamous epithelium where the surface cells are not filled with keratin. It's found in areas that need to be moist and flexible, like the lining of the mouth and esophagus.

Signup and view all the flashcards

Stratified Cuboidal Epithelium

A multi-layered epithelium with cube-shaped cells. It's found in areas where secretion and absorption occur, like the ducts of glands.

Signup and view all the flashcards

Function of Stratified Cuboidal Epithelium

This epithelium provides protection and is involved in secretion and absorption.

Signup and view all the flashcards

Location of Stratified Cuboidal Epithelium

Found in the larger ducts of sweat glands, mammary glands, and salivary glands.

Signup and view all the flashcards

Types of Epithelium

Epithelium can be classified based on cell shape (squamous, cuboidal, columnar) and number of layers (simple, stratified).

Signup and view all the flashcards

Simple Cuboidal Epithelium

A single layer of cube-shaped cells with centrally located nuclei, involved in secretion and absorption.

Signup and view all the flashcards

Simple Columnar Epithelium

A single layer of tall, rectangular cells with nuclei usually located towards the base, involved in secretion and absorption.

Signup and view all the flashcards

Stratified Columnar Epithelium

Multiple layers with a superficial layer of columnar cells, found in areas of both protection and secretion.

Signup and view all the flashcards

Pseudostratified Columnar Epithelium

A single layer of cells that appear stratified due to nuclei at different levels, but all cells are attached to the basement membrane.

Signup and view all the flashcards

Transitional Epithelium

A stratified epithelium with cells that change shape, allowing for distension of organs like the bladder.

Signup and view all the flashcards

Ciliated Epithelium

Epithelium with cilia, hair-like projections, aiding in movement of substances.

Signup and view all the flashcards

What is the main function of reticular fibers?

Reticular fibers provide support and structure for soft tissues, especially in lymphatic tissues where they form a framework for the formation of blood cells.

Signup and view all the flashcards

Where are reticular fibers most abundant?

Reticular fibers are most abundant in hemopoietic tissue, where they provide a framework for the formation of blood cells. They also play a role in the structure of lymph nodes and the spleen.

Signup and view all the flashcards

Mesenchyme

An embryonic connective tissue that differentiates into all other connective tissue types. It is primarily found in embryos.

Signup and view all the flashcards

Mucous Connective Tissue (Wharton's Jelly)

Found in the umbilical cord during fetal development. It is a specialized connective tissue that provides cushioning and support to the developing fetus.

Signup and view all the flashcards

Connective Tissue Proper

One of the main categories of connective tissue. It encompasses loose and dense connective tissues.

Signup and view all the flashcards

Specialized Connective Tissues

A category of connective tissue, includes cartilage, bone, and blood. They have unique structures and functions.

Signup and view all the flashcards

What is the difference between loose and dense connective tissue?

Loose connective tissue has a loosely arranged arrangement of fibers, while dense connective tissue has tightly packed fibers. These differences contribute to each type's function.

Signup and view all the flashcards

What are the main types of loose connective tissue?

Loose types include areolar, adipose, and reticular tissue. They provide support, flexibility, and cushions organs.

Signup and view all the flashcards

What are the 4 main tissue types?

The four main tissue types are epithelial, connective, muscle, and nervous tissue. Each type has a unique structure and function.

Signup and view all the flashcards

What is epithelial tissue's main function?

Epithelial tissue covers the body surface, lines body cavities, and forms glands. It has diverse functions including protection, absorption, secretion, and filtration.

Signup and view all the flashcards

What are the 2 key characteristics used to classify epithelial tissue?

Epithelial tissue is classified based on the shape of its cells (squamous, cuboidal, columnar) and the number of layers (simple, stratified).

Signup and view all the flashcards

What are the features of connective tissue?

Connective tissue supports other tissues, provides structure, and helps with transport and defense. It consists of cells, fibers, and a ground substance.

Signup and view all the flashcards

Keratinized Stratified Squamous

Stratified squamous epithelium with keratin-filled surface cells, forming a tough, waterproof barrier. Found in the skin's epidermis.

Signup and view all the flashcards

Non-Keratinized Stratified Squamous

Stratified squamous epithelium without keratin. Found in moist areas like the mouth and esophagus, providing flexibility.

Signup and view all the flashcards

Location of Stratified Cuboidal

Found in larger ducts of sweat glands, mammary glands, and salivary glands.

Signup and view all the flashcards

Function of Stratified Cuboidal

Provides protection and is involved in secretion and absorption.

Signup and view all the flashcards

Epithelial Tissue Layers

Can be either simple (one layer) or stratified (multiple layers).

Signup and view all the flashcards

Glandular Epithelium

A type of epithelial tissue specialized for producing and secreting substances.

Signup and view all the flashcards

Exocrine Glands

Glands that release their secretions through a duct onto body surfaces, like skin.

Signup and view all the flashcards

Endocrine Glands

Ductless glands that secrete hormones directly into the bloodstream.

Signup and view all the flashcards

Serous Gland

A gland that produces a watery secretion.

Signup and view all the flashcards

Mucous Gland

A gland that releases a thick, slimy, chemically stable mucous secretion.

Signup and view all the flashcards

Mixed Gland

A gland that produces a combination of watery and mucous secretions.

Signup and view all the flashcards

Merocrine Secretion

A type of secretion where the cells remain intact during the release of secretory products.

Signup and view all the flashcards

Apocrine Secretion

A type of secretion where the cells release their products along with part of their cytoplasm.

Signup and view all the flashcards

Holocrine Secretion

A type of secretion where the cells release their products by rupturing and dying.

Signup and view all the flashcards

Connective Tissue

A diverse tissue type providing support, structure, and defense. It consists of specialized cells, fibers, and a ground substance.

Signup and view all the flashcards

Areolar Connective Tissue

A loose connective tissue with a gel-like matrix, containing fibers like collagen and elastin. Provides cushioning, support, and contains immune cells.

Signup and view all the flashcards

Study Notes

Basic Tissues

  • Basic tissues are groups of cells with similar structures that work together to perform specific functions.
  • There are four main tissue types: epithelial, connective, muscle, and nervous.

Epithelial Tissue

  • Epithelial tissue covers body surfaces, lines body cavities, and forms glands.
  • Characteristics include cellularity (lots of cells, no space between), rapid regeneration, avascularity (lacks blood vessels), and polarity (apical and basal sides).
  • Function includes protection, absorption, sensory reception, ion transport, secretion, filtration, and formation of slippery surfaces for movement.
  • Classification is based on cell shape (squamous, cuboidal, columnar) and layer thickness (simple, stratified, pseudostratified).
  • Different types include simple squamous, simple cuboidal, simple columnar, stratified squamous, stratified cuboidal, pseudostratified columnar, and transitional epithelium. Each type has specific locations and functions.

Connective Tissue Proper

  • Connective tissues originate from mesenchymal cells.
  • Function is providing structural support to the body's organs.
  • Composition: cells, protein fibers (collagen, elastic, reticular), and ground substance.
  • Cells include mesenchymal cells (stem cells), fibroblasts/fibrocytes (produce fibers and ground substance), macrophages, leukocytes/WBCs, plasma cells (produce antibodies), mast cells (release histamine), fat cells/adipocytes (energy storage), and pigment cells/chromatophores (skin pigmentation).
  • Fibrous proteins include collagen fibers (tensile strength, flexibility), elastic fibers (stretching and recoiling), and reticular fibers (forming supportive frameworks in soft tissues like lymphatic tissues).

Muscle Tissue

  • Muscle tissue is responsible for movement.
  • Three types:
    • Skeletal muscle: striated, voluntary, often attached to bones.
    • Smooth muscle: non-striated, involuntary, typically found in internal organs.
    • Cardiac muscle: striated, involuntary, found in the heart.

Nervous Tissue

  • Nervous tissue is composed of glial cells and neurons (nerve cells).
  • Glial cells provide support; neurons receive, transmit, and integrate information.
  • Four main glial cell types: microglia, oligodendrocytes, Schwann cells, and astrocytes.

Glandular Epithelium

  • Glandular epithelium is specialized for producing and secreting substances.

  • Two main types: exocrine and endocrine, distinguished by whether secretions are released into ducts or directly into the bloodstream.

  • Exocrine glands release secretions onto body surfaces (e.g., skin).

  • Endocrine glands release hormones into the bloodstream.

  • Secretion classifications are based on the mechanism by which secretory products are released, these include merocrine, apocrine and holocrine.

  • Secretion classifications are based also on the shape of the terminal ends of secretory units: tubular, acinar/alveolar.

  • Classification is also based on the arrangement: simple, branched or compound.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Basic Tissue PDF

Description

Explore the fundamental concepts of basic tissues, focusing on epithelial tissue characteristics, classifications, and functions. This quiz covers the various types of epithelial tissue and their specific roles in the body. Test your understanding and knowledge of these essential biological components.

More Like This

Histology and Embryology Chapter 2
36 questions

Histology and Embryology Chapter 2

QuietLagoon avatar
QuietLagoon
Basics of Epithelial Tissues
16 questions

Basics of Epithelial Tissues

PrettyAnaphora avatar
PrettyAnaphora
Introduction to Basic Tissues
10 questions

Introduction to Basic Tissues

AdroitFaith avatar
AdroitFaith
Basic Tissues Quiz
45 questions

Basic Tissues Quiz

ThrillingLivermorium8091 avatar
ThrillingLivermorium8091
Use Quizgecko on...
Browser
Open
Browser
Browser