Four Basic Types of Tissues
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Questions and Answers

What are the four basic types of tissues?

  • Epithelial, Connective, Osseous, and Nervous
  • Epithelial, Supportive, Muscle, and Vascular
  • Connective, Muscle, Vascular, and Nervous
  • Epithelial, Connective, Muscle, Nervous (correct)

What are the cells of the Epithelial tissue described as?

Aggregated polyhedral cells

The matrix of Epithelial tissues is a ______ amount.

small

What is the function of Epithelial tissue?

<p>Lining of surface or body cavities; glandular secretion</p> Signup and view all the answers

What are the cells of the Connective tissue described as?

<p>Several types of fixed and wandering cells</p> Signup and view all the answers

The matrix of Connective tissues is a ______ amount.

<p>abundant</p> Signup and view all the answers

What is the function of Connective tissue?

<p>Support and protection of tissues/organs</p> Signup and view all the answers

What are the cells of the Muscle tissue described as?

<p>Elongated contractile cells</p> Signup and view all the answers

The matrix of Muscle tissues is a ______ amount.

<p>moderate</p> Signup and view all the answers

What is the function of Muscle tissue?

<p>Strong contraction; body movements</p> Signup and view all the answers

What are the cells of the Nervous tissue described as?

<p>Elongated cells with extremely fine processes</p> Signup and view all the answers

The matrix of Nervous tissues is a ______ amount.

<p>very small</p> Signup and view all the answers

What is the function of Nervous tissue?

<p>Transmission of nerve impulses</p> Signup and view all the answers

The shapes and dimensions of epithelial cells are constant.

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

What kind of shape do columnar cells generally have?

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

What kind of shape do Squamous cells generally have?

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

What kind of shape do Cuboidal or Pyramidal cells generally have?

<p>Spherical nuclei (D)</p> Signup and view all the answers

What is the Basal Pole / Surface in Epithelial Cells?

<p>Region of the cell contacting the ECM and connective tissue</p> Signup and view all the answers

What is the Basement membrane divided into?

<p>Basal lamina and Reticular lamina (C)</p> Signup and view all the answers

What kind of structure is the Basement membrane?

<p>Entire structure beneath the epithelial cells visible with the light microscope</p> Signup and view all the answers

What kind of layer is the Basal Lamina?

<p>Fine extracellular layer seen ultrasonically; not seen under light microscope</p> Signup and view all the answers

What are Tight Junctions?

<p>Most apical of the junctions and seals two adjacent cells</p> Signup and view all the answers

Describe Adherens (Anchoring) Junctions

<p>Area of strong cell adhesion that Stabilizes neighboring tight junctions</p> Signup and view all the answers

What is Microvilli?

<p>Increases cell surface area to facilitate absorption</p> Signup and view all the answers

What is Stereocilia?

<p>Increases the surface area of the cells to facilitate absorption of molecules</p> Signup and view all the answers

What are the functions Functions of the Simple Squamous Epithelium?

<p>Facilitates movement of the viscera, Secretion of biologically active molecules, Active transport by pinocytosis, and Gas exchange</p> Signup and view all the answers

What shape are cells in the Simple Cuboidal Epithelium tissue?

<p>Single layer of squared-shaped cells with spherical nuclei (D)</p> Signup and view all the answers

What functions do Simple Cuboidal Epithelium support?

<p>Covering and Secretion</p> Signup and view all the answers

What are the functions of the Stratified Squamous Epithelium when keratinized?

<p>Prevents water loss, protection</p> Signup and view all the answers

Where can Stratified Cuboidal Epithelium be found?

<p>Lines the excretory ducts of salivary and sweat glands and ovarian follicles</p> Signup and view all the answers

What are the functions of Stratified Cuboidal and Columnar Epithelium?

<p>Protection and secretion</p> Signup and view all the answers

Function of Transitional Epithelium

<p>Specialized for distensibility</p> Signup and view all the answers

Function of Pseudostratified Columnar Epithelium

<p>Heavily ciliated to transport mucus-trapped particles</p> Signup and view all the answers

Glandular Epithelia is otherwise known as...?

<p>glands</p> Signup and view all the answers

Mammary glands can secrete all three substances, which are...

<p>lipids, proteins, and complexes of carbohydrate-protein (D)</p> Signup and view all the answers

ENDOCRINE GLAND is connected to the surface epithelium.

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

What type of glands are Sweat glands, mammary glands, intestinal glands, and salivary glands?

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

What is released during Merocrine secretion?

<p>proteins</p> Signup and view all the answers

During holocrine secretion, what kind of product is used?

<p>lipid-rich</p> Signup and view all the answers

What does the Connective Tissue provide for a body?

<p>Supports and physically connects other tissues and cells to form the organs of the body</p> Signup and view all the answers

Give an example of resident cells in the body

<p>Mesenchymal cell, Macrophage, Adipocyte, and Fibroblast</p> Signup and view all the answers

In fibrobalsts, all components of the ECM is derived from from osteoblast, especially collagen

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

What are Fiberous components of CT formed from?

<p>proteins</p> Signup and view all the answers

Fill in the blank: Reticular Fibers, consist mainly of Collagen Type ___

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

What has the same features as loose connective tissue but with fewer cells?

<p>Dense Connective Tissue</p> Signup and view all the answers

What is a type Dense Regular Connective Tissue

<p>tendons, Aponeuroses, ligaments</p> Signup and view all the answers

Flashcards

Epithelial Tissue

Covers and lines surfaces for protection, absorption and secretion.

Connective Tissue

Supports, connects, and separates different tissues and organs of the body.

Adipose Tissue

Tissue composed of fat cells, storing energy and providing insulation.

Epithelial Cell Shape

Variable shapes, from columnar to squamous. Function is delegated by shape and size.

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Basal Pole of Epithelial Cells

The region of the cell contacting the ECM and connective tissue.

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Apical Pole of Epithelial Cells

The opposite end of the cell, usually facing a space.

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Basement Membrane

Thin extracellular sheet supporting epithelia, divided into basal and reticular lamina.

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Tight Junctions

Most apical junction, seals adjacent cells together preventing leakage.

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Adherens Junctions

Area of strong cell adhesion, stabilizes neighboring tight junctions.

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Desmosomes

Spot-like structures between cells for strong adhesion.

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Gap Junctions

Allows intercellular exchange of small molecules for communication.

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Hemidesmosomes

Attaches cytoskeleton to the basal lamina.

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Microvilli

Visible as brush borders, they increase cell surface area for absorption.

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Stereocilia

Increases the surface area of the cells to facilitate absorption of molecules.

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Cilia

Long, motile apical structures abundant on cuboidal or columnar cells.

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Simple Squamous Epithelium

Single layer of flattened cells; facilitates movement, secretion, and gas exchange.

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Simple Cuboidal Epithelium

Single layer of square-shaped cells; functions in covering and secretion.

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Simple Columnar Epithelium

Single layer of cells taller than wide; functions in protection, lubrication, absorption, secretion.

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Stratified Squamous Epithelium

Two or more layers of flattened cells; for protection.

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Transitional Epithelium (Urothelium)

Stratified epithelium specialized for distensibility. Found in the urinary tract.

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Pseudostratified Columnar Epithelium

Irregular cells attached to the basement membrane, giving a stratified appearance. Found in the respiratory tract.

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Glandular Epithelia

Specialized epithelia for synthesis, storage, and release of substances.

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Merocrine Glands

Secretes substances via exocytosis. Most common secretion method.

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Holocrine Glands

Secretion via complete cell destruction. Products and cell debris released.

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Apocrine Glands

Secretion by loss of apical cytoplasm. Contains lipid droplets.

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Fibroblasts

Main cells in connective tissue, produces and maintains ECM components.

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Adipocytes

Fat cells specialized for cytoplasmic storage of lipids.

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Macrophages

Phagocytic cells specializing in turnover of fibers and removal of debris.

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Plasma Cells

Synthesizes and secretes antibodies and has a clock-face appearance.

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Connective Tissue

Provides a matrix that supports and connects other tissues and cells.

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