Question 1

Which of the following best describes the main function of simple squamous epithelium, as seen lining blood vessels and alveoli of the lungs?

Accepted Answer

Rapid diffusion and filtration

Question 2

A tissue sample from the kidney tubules shows a single layer of cube-shaped cells with centrally located nuclei. What is the most likely classification of this epithelium?

Accepted Answer

Simple cuboidal epithelium

Question 3

Which feature distinguishes stratified squamous epithelium from simple squamous epithelium?

Accepted Answer

Multiple layers of cells with flattened cells at the surface

Question 4

A biopsy from the lining of the small intestine reveals tall, closely packed cells with oval nuclei aligned near the base and microvilli on the apical surface. What is the primary function of this tissue?

Accepted Answer

Absorption and secretion

Question 5

Which of the following statements about epithelial tissue is CORRECT?

Accepted Answer

Epithelial tissue is supported by a basement membrane

Question 6

A histological slide shows multiple layers of cells with the apical layer being flat and scale-like. This tissue is most likely found in which location?

Accepted Answer

Esophagus lining

Question 7

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

Accepted Answer

Epithelial cells have an apical surface exposed to a cavity or exterior and a basal surface attached to connective tissue

Question 8

A patient has damage to the tracheal lining, which is composed of pseudostratified ciliated columnar epithelium. What is the main function of the cilia in this tissue?

Accepted Answer

Move mucus and trapped particles out of the airway

Question 9

Which of the following equations correctly represents the relationship between surface area ($$A$$), volume ($$V$$), and the efficiency of diffusion in epithelial tissues?

Accepted Answer

$$\frac{A}{V}$$ increases as cells become flatter, enhancing diffusion

Question 10

Which of the following is a key reason why epithelial tissues are avascular?

Accepted Answer

They rely on diffusion from underlying connective tissue for nutrients

Question 11

A tissue sample from the esophagus is stained and observed under a microscope. It shows several layers of cells, with the surface cells being flat and scale-like. Which type of epithelium is this?

Accepted Answer

Stratified squamous epithelium

Question 12

Which of the following best explains why simple columnar epithelium is well-suited for absorption in the digestive tract?

Accepted Answer

It has microvilli to increase surface area

Question 13

Which of the following cell junctions is primarily responsible for preventing substances from passing between epithelial cells?

Accepted Answer

Tight junctions

Question 14

A slide of kidney tissue shows round, centrally located nuclei in a single layer of cells forming tubules. Which function is most associated with this tissue?

Accepted Answer

Secretion and absorption

Question 15

Which of the following best describes the basement membrane in epithelial tissues?

Accepted Answer

A noncellular layer that supports and anchors the epithelium

Question 16

Which of the following is a distinguishing feature of pseudostratified columnar epithelium?

Accepted Answer

Nuclei appear at different heights, giving a false impression of stratification

Question 17

A patient with chronic acid reflux is at risk for damage to which type of epithelial tissue lining the esophagus?

Accepted Answer

Stratified squamous epithelium

Question 18

Which of the following best describes the arrangement of nuclei in simple columnar epithelium?

Accepted Answer

Nuclei are elongated and aligned near the basal surface

Question 19

Which of the following is a real-life example of where you would find simple cuboidal epithelium?

Accepted Answer

Lining of kidney tubules

Question 20

Which of the following best explains why stratified squamous epithelium is found in areas subject to abrasion?

Accepted Answer

It provides multiple layers for protection against mechanical stress

Epithelial Tissues: Structure, Classification, and Histological Identification

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