Question 1

Which of the following best describes the function of tight junctions in epithelial tissue?

Accepted Answer

They form an impermeable seal between adjacent cells, preventing passage of substances between them.

Question 2

Which component of the extracellular matrix is primarily responsible for attracting water molecules and providing tissue hydration?

Accepted Answer

Glycosaminoglycans (GAGs)

Question 3

A tissue sample shows cells that are long, cylindrical, and multinucleated. Which primary tissue class does this most likely represent?

Accepted Answer

Muscle tissue

Question 4

Which type of epithelial tissue is best suited for rapid diffusion and is found lining the alveoli of the lungs?

Accepted Answer

Simple squamous epithelium

Question 5

Which equation best represents the process of osmosis across a simple epithelial layer?

Accepted Answer

$$J = L_p (\Delta P - \sigma \Delta \pi)$$

Question 6

A gland that releases its product by exocytosis without losing any part of the cell is classified as:

Accepted Answer

Merocrine (eccrine)

Question 7

Which of the following cell morphologies is most likely to be found in nervous tissue?

Accepted Answer

Stellate

Question 8

Stratified squamous epithelium is best suited for which of the following functions?

Accepted Answer

Protection against abrasion

Question 9

Which of the following is a distinguishing feature of transitional epithelium?

Accepted Answer

Cells change shape from round to flat when stretched

Question 10

Which type of exocrine gland releases its product by the rupture of entire cells?

Accepted Answer

Holocrine

Question 11

Which of the following best explains why simple columnar epithelium is found lining the small intestine?

Accepted Answer

Its structure allows for efficient absorption and secretion due to microvilli and goblet cells.

Question 12

Which of the following is NOT a function of epithelial tissue?

Accepted Answer

Transmission of electrical impulses

Question 13

Which type of cellular junction allows ions and small molecules to pass directly between adjacent cells, facilitating communication?

Accepted Answer

Gap junction

Question 14

A patient has a genetic defect in collagen synthesis. Which tissue component will be most affected?

Accepted Answer

Fibrous proteins of the extracellular matrix

Question 15

Which of the following best describes the difference between endocrine and exocrine glands?

Accepted Answer

Exocrine glands secrete products into ducts; endocrine glands secrete into the bloodstream.

Question 16

Which equation would you use to describe the rate of simple diffusion of a solute across an epithelial membrane?

Accepted Answer

$$J = -D \frac{dC}{dx}$$

Question 17

Which of the following is a function of goblet cells found in epithelial tissue?

Accepted Answer

Secretion of mucous

Question 18

Which of the following best describes the role of desmosomes in tissue integrity?

Accepted Answer

They anchor adjacent cells together and connect to intermediate filaments, resisting mechanical stress.

Question 19

Which type of epithelial tissue is most likely to be found lining the urinary bladder, allowing it to stretch and recoil?

Accepted Answer

Transitional epithelium

Question 20

Which of the following is a correct statement about the regenerative capacity of epithelial tissue?

Accepted Answer

Epithelial tissue is highly regenerative, with cells undergoing frequent mitosis.

Histology I: Introduction to Tissues and Epithelial Tissue

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