Q: Which equation best represents the rate of diffusion ($$R) of $$nutrients across the basement membrane to avascular epithelial tissue, assuming Fick's law applies?

$$R = D \times A \times \frac{\Delta C}{d}$$

Question 1

Which characteristic of epithelial tissue is best described by the presence of tightly packed cells with minimal extracellular matrix?

Accepted Answer

Cellularity

Question 2

A tissue sample from the lining of the alveoli is observed under a microscope. The cells appear flat with flattened nuclei and form a single layer. Which type of epithelial tissue is this?

Accepted Answer

Simple squamous epithelium

Question 3

Which of the following best explains why epithelial tissue is avascular?

Accepted Answer

Epithelial tissue relies on diffusion from underlying connective tissue for nutrients and gases.

Question 4

A slide of the trachea shows a single layer of cells that appear to be stratified, with cilia and goblet cells present. What is the correct identification of this tissue?

Accepted Answer

Pseudostratified columnar epithelium

Question 5

Which surface specialization increases the surface area for absorption and secretion in epithelial cells?

Accepted Answer

Microvilli

Question 6

When identifying stratified epithelial tissues under the microscope, which layer should be used to determine the tissue type?

Accepted Answer

The apical layer

Question 7

A patient presents with a bladder that appears distended. What change would you expect in the transitional epithelium lining the bladder?

Accepted Answer

Surface cells flatten and appear squamous

Question 8

Which function of epithelial tissue is most directly related to the presence of nerves but absence of blood vessels?

Accepted Answer

Sensation

Question 9

A tissue sample from the skin shows multiple layers of cells, with the apical layer being flat and the basal layers appearing cuboidal. Which type of epithelium is present?

Accepted Answer

Stratified squamous epithelium

Question 10

Which equation best represents the rate of diffusion ($$R) of $$nutrients across the basement membrane to avascular epithelial tissue, assuming Fick's law applies?

Accepted Answer

$$R = D 	imes A 	imes \frac{\Delta C}{d}$$

Question 11

Which epithelial tissue type is most likely to be found lining kidney tubules and is specialized for secretion and absorption?

Accepted Answer

Simple cuboidal epithelium

Question 12

A tissue sample from the intestine shows tall cells with ovoid nuclei and numerous goblet cells. Which type of epithelial tissue is present?

Accepted Answer

Simple columnar epithelium

Question 13

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

Accepted Answer

Muscle contraction

Question 14

Which surface specialization is responsible for moving mucus along the respiratory tract?

Accepted Answer

Cilia

Question 15

A tissue sample from the esophagus is examined. The apical layer is flat, and the tissue is non-keratinized. What is the primary function of this epithelium?

Accepted Answer

Protection against abrasion

Question 16

Which equation best describes the regeneration rate ($$R) of $$epithelial cells, given a constant mitotic index ($$M) $$and cell loss rate ($$L$$)?

Accepted Answer

$$R = M - L$$

Question 17

Which tissue type is most likely to be found in the urinary bladder and can change its appearance based on the degree of stretch?

Accepted Answer

Transitional epithelium

Question 18

Which of the following statements about goblet cells is correct?

Accepted Answer

Goblet cells produce mucus and are embedded between epithelial cells.

Question 19

A tissue sample from a gland shows cube-shaped cells arranged in a single layer. Which tissue type is most likely present?

Accepted Answer

Simple cuboidal epithelium

Question 20

Which of the following is a correct application of the CRAP mnemonic for epithelial tissue characteristics?

Accepted Answer

Regeneration means epithelial cells rapidly replace lost surface cells.

Epithelial Tissue: Classification, Characteristics, and Identification

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