Stratified Epithelium Cells Quiz
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Questions and Answers

Pseudostratified columnar epithelium is a stratified epithelia.

False

What does it mean to be a stratified squamous epithelia?

Many layers of flat cells

What is the function of stratified squamous epithelia?

Protection from abrasion

Where can you find stratified squamous epithelia?

<p>Skin, lining of esophagus, mouth</p> Signup and view all the answers

Which epithelium is a thick membrane composed of several cell layers?

<p>Stratified columnar</p> Signup and view all the answers

What cells compose the stratified squamous epithelium?

<p>Basal cells, squamous surface cells</p> Signup and view all the answers

In the stratified columnar epithelium, what type are the basal cells?

<p>Cuboidal or columnar</p> Signup and view all the answers

In stratified squamous epithelia, basal cells are metabolically active.

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

What type of cells are the surface cells in a stratified squamous epithelium?

<p>Squamous (flattened)</p> Signup and view all the answers

In the keratinized type of stratified squamous epithelium, what are the surface cells filled with?

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

Are the surface cells dead or alive in a stratified squamous epithelium?

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

In the stratified squamous epithelium, what are the basal cells active in?

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

In stratified squamous epithelium, what do the basal cells produce?

<p>Cells of the more superficial layers</p> Signup and view all the answers

What is the function of the stratified squamous epithelium?

<p>Protects underlying tissues in areas subjected to abrasion</p> Signup and view all the answers

Where can the nonkeratinized stratified squamous epithelium be located?

<p>Moist linings of esophagus, mouth, and vagina</p> Signup and view all the answers

Where can the keratinized stratified squamous epithelium be located?

<p>Epidermis of skin</p> Signup and view all the answers

Is the epidermis of skin a wet or dry membrane?

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

What is the barrier of protection?

<p>Stratified squamous epithelium</p> Signup and view all the answers

What cells compose stratified columnar epithelium?

<p>Layers of cuboidal or columnar cells</p> Signup and view all the answers

What is the function of stratified columnar epithelium?

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

Where can you find stratified columnar epithelium?

<p>Male urethra (rare)</p> Signup and view all the answers

What cells make up the basal cells of the transitional epithelia?

<p>Cuboidal or columnar</p> Signup and view all the answers

What shapes do the cells make in the apical cells of the transitional epithelia?

<p>Domed or flat</p> Signup and view all the answers

Why do apical cells change shape?

<p>Allows distension</p> Signup and view all the answers

Where can the transitional epithelia be located?

<p>Lines the ureters, bladder, and part of the urethra</p> Signup and view all the answers

What epithelia resembles both stratified squamous and stratified cuboidal cells?

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

What are the basal cells of the transitional epithelia?

<p>Cuboidal or columnar</p> Signup and view all the answers

What are the surface cells of the transitional epithelia?

<p>Dome shaped or squamouslike</p> Signup and view all the answers

What determines the shape of the surface cell in the transitional epithelia?

<p>Degree of organ stretch</p> Signup and view all the answers

What is the function of the transitional epithelium?

<p>Stretches readily and permits distension of urinary organ by contained urine</p> Signup and view all the answers

What are glands?

<p>Groups of cells that make and secrete a particular fluid</p> Signup and view all the answers

What do the glandular epithelia make?

<p>Endocrine glands, exocrine glands</p> Signup and view all the answers

What glands produce hormones and are structurally diverse?

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

Endocrine glands are made up of only epithelial cells.

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

Where do endocrine glands secrete their products?

<p>Blood supply</p> Signup and view all the answers

Where do all exocrine glands secrete their products?

<p>Onto skin or into body cavities</p> Signup and view all the answers

What are the types of exocrine glands?

<p>Mucous, sweat, oil, salivary, pancreas</p> Signup and view all the answers

What are the two types of exocrine glands?

<p>Unicellular, multicellular</p> Signup and view all the answers

What is the only single celled gland?

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

Where can you find unicellular exocrine glands?

<p>Epithelia of intestine and respiratory tracts</p> Signup and view all the answers

What do the unicellular exocrine glands produce?

<p>Mucin, water</p> Signup and view all the answers

What makes mucous?

<p>Mucin and water</p> Signup and view all the answers

What are the purposes of mucous?

<p>Protection, lubrication</p> Signup and view all the answers

Why is the top of a goblet cell bigger than the bottom?

<p>It is packed with the protein mucin</p> Signup and view all the answers

What organ is composed of goblet cells?

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

Why is the stomach cell composed of goblet cells?

<p>Protect from hydrochloric acid</p> Signup and view all the answers

Which type of exocrine gland is structurally more complex?

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

What exocrine glands have epithelium derived ducts and secretory epithelium?

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

What are the classifications of the multicellular exocrine glands?

<p>Simple, compound, tubular, alveolar, tubuloalveolar</p> Signup and view all the answers

Which classifications of the multicellular exocrine glands relates to ducts?

<p>Simple, compound</p> Signup and view all the answers

Which classifications of the multicellular exocrine glands relates to the shape?

<p>Tubular, alveolar, tubuloalveolar</p> Signup and view all the answers

What does it mean for a multicellular exocrine gland to be simple?

<p>Single unbranched duct</p> Signup and view all the answers

What does it mean for a multicellular exocrine gland to be compound?

<p>Branched duct</p> Signup and view all the answers

What does it mean for a multicellular exocrine gland to be tubular?

<p>Secretory cells from tubes</p> Signup and view all the answers

What does it mean for a multicellular exocrine gland to be alveolar?

<p>Secretory cells form alveoli</p> Signup and view all the answers

What does it mean for a multicellular exocrine gland to be tubuloalveolar?

<p>Secretory cells form tubes and sacs</p> Signup and view all the answers

Where do the multicellular exocrine glands dip into?

<p>Connective tissue</p> Signup and view all the answers

What is an example of a simple tubular exocrine gland?

<p>Intestinal gland</p> Signup and view all the answers

What is an example of a simple branched tubular exocrine gland?

<p>Stomach (gastric) glands</p> Signup and view all the answers

What is an example of a simple alveolar exocrine gland?

<p>No important examples in humans</p> Signup and view all the answers

What is an example of a simple branched alveolar exocrine gland?

<p>Sebaceous (oil) gland</p> Signup and view all the answers

What is an example of a compound tubular exocrine gland?

<p>Duodenal glands of small intestines</p> Signup and view all the answers

What is an example of a compound alveolar exocrine gland?

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

What is an example of a compound tubuloalveolar gland?

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

Study Notes

Stratified Epithelium Overview

  • Pseudostratified columnar epithelium is not a stratified epithelium.
  • Stratified squamous epithelium consists of multiple layers of flat cells.

Functions and Locations

  • The primary function of stratified squamous epithelium is protection against abrasion.
  • Common locations for stratified squamous epithelium include skin, esophagus, and mouth.
  • Stratified columnar epithelium is a thick membrane composed of several layers found in rare locations like the male urethra.

Cell Composition and Characteristics

  • Stratified squamous epithelium is made up of basal cells and squamous surface cells.
  • In stratified columnar epithelium, basal cells can be cuboidal or columnar.
  • Surface cells in stratified squamous epithelium are squamous or flattened.
  • Keratinized stratified squamous epithelium has surface cells filled with keratin and these surface cells are dead.

Cell Activity and Functions

  • Basal cells in stratified squamous epithelium are metabolically active and involved in mitosis.
  • They also produce cells for the superficial layers of the epithelium.
  • Non-keratinized stratified squamous epithelium is found in moist linings such as the esophagus and vagina.

Transitional Epithelium

  • Transitional epithelium features basal cells that are cuboidal or columnar and apical cells that can be domed or flat based on organ stretch.
  • Allows for distension of urinary organs due to apical cell shape changes.
  • Located in the ureters, bladder, and part of the urethra.

Glandular Epithelia

  • Glands are defined as groups of cells that produce and secrete a specific fluid.
  • Glandular epithelia form endocrine and exocrine glands, with endocrine glands producing hormones and having diverse structures.
  • Endocrine glands secrete products into the blood, while exocrine glands release products onto skin or into body cavities.

Exocrine Glands

  • Types of exocrine glands include mucous, sweat, oil, salivary, and pancreatic glands.
  • Can be classified as unicellular or multicellular; goblet cells are the only unicellular exocrine gland.
  • Unicellular exocrine glands mainly produce mucin and water for protection and lubrication.

Multicellular Exocrine Glands

  • More complex in structure, multicellular exocrine glands have ducts and secretory cells.
  • Classifications based on ducts: Simple (unbranched) and Compound (branched).
  • Classifications based on shape: Tubular (tube-shaped), Alveolar (sac-shaped), and Tubuloalveolar (combination of tubes and sacs).

Examples of Exocrine Glands

  • Simple tubular exocrine gland: Intestinal gland.
  • Simple branched tubular gland: Gastric glands (stomach).
  • Simple branched alveolar gland: Sebaceous (oil) glands.
  • Compound tubular gland: Duodenal glands of small intestines.
  • Compound alveolar gland: Mammary glands.
  • Compound tubuloalveolar gland: Salivary glands.

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Description

Test your knowledge of stratified epithelium cells with this quiz. You'll explore concepts like the types, functions, and locations of various stratified epithelial tissues. Ideal for students of biology and anatomy.

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