$$A = n \times a_{microvillus}$$

Question 1

Which of the following is NOT a special characteristic of epithelial tissue?

Accepted Answer

It is highly vascularized, allowing for rapid nutrient exchange.

Question 2

A patient with Celiac disease develops a 'leaky gut' due to damage to which specific epithelial structure?

Accepted Answer

Tight junctions

Question 3

Which type of epithelial tissue would you expect to find lining the alveoli of the lungs, where rapid gas exchange occurs?

Accepted Answer

Simple squamous epithelium

Question 4

What is the main advantage of microvilli on the apical surface of epithelial cells in the small intestine?

Accepted Answer

They increase the surface area for absorption.

Question 5

Which epithelial cell type is best suited for protection against abrasion, such as in the skin and oral cavity?

Accepted Answer

Stratified squamous epithelium

Question 6

Stratified epithelia are named according to the shape of cells found in which region?

Accepted Answer

Apical layer

Question 7

Which of the following best describes a stratified cuboidal epithelium?

Accepted Answer

Multiple layers of cube-shaped cells

Question 8

Which type of epithelial tissue is specialized to stretch and change shape, such as in the urinary bladder?

Accepted Answer

Transitional epithelium

Question 9

Which of the following is a function of simple columnar epithelium in the gastrointestinal tract?

Accepted Answer

Absorption

Question 10

Which type of glandular epithelium lacks ducts and releases hormones directly into the surrounding tissue or blood?

Accepted Answer

Endocrine gland

Question 11

A compound tubular exocrine gland is characterized by which structural feature?

Accepted Answer

Branched, tube-shaped ducts

Question 12

Which of the following equations best represents the relationship between surface area and absorption in epithelial cells with microvilli?

Accepted Answer

$$A = n 	imes a_{microvillus}$$

Question 13

Which cell junction is primarily responsible for preventing substances from passing between epithelial cells?

Accepted Answer

Tight junctions

Question 14

Which of the following is NOT a function of simple squamous epithelium?

Accepted Answer

Protection from abrasion

Question 15

Which of the following best describes the polarity of epithelial cells?

Accepted Answer

They have distinct apical and basal surfaces.

Question 16

A gland that secretes its product into a duct that opens onto a body surface is classified as:

Accepted Answer

Exocrine

Question 17

Which of the following is NOT one of the four major tissue types in the human body?

Accepted Answer

Bone

Question 18

Which specialized structure on the lateral surface of epithelial cells provides mechanical strength by anchoring cells together?

Accepted Answer

Desmosomes

Question 19

Which type of epithelial tissue is most likely to be found lining the ducts of salivary glands, providing protection?

Accepted Answer

Stratified cuboidal epithelium

Question 20

Which of the following best describes pseudostratified columnar epithelium?

Accepted Answer

Single layer of cells of varying height, all touching the basement membrane

Epithelial Tissue: Structure, Classification, and Function

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