Question 1

Which of the following best describes the main function of simple squamous epithelium in the alveoli of the lungs?

Accepted Answer

Rapid diffusion of gases

Question 2

A tissue sample is observed under the microscope and shows multiple layers of flat cells at the surface, with deeper layers appearing cuboidal or columnar. Which type of epithelium is this most likely to be?

Accepted Answer

Stratified squamous epithelium

Question 3

Which characteristic is unique to epithelial tissues compared to other primary tissue types?

Accepted Answer

Avascularity but innervation

Question 4

A patient has a wound that is healing rapidly due to the high regenerative capacity of the tissue involved. Which property of epithelial tissue is most responsible for this?

Accepted Answer

Cells have apical-basal polarity and are stimulated by loss of polarity

Question 5

Which of the following best explains why epithelial tissues require support from underlying connective tissue?

Accepted Answer

Epithelial tissues are avascular and rely on diffusion from connective tissue for nutrients

Question 6

A gland that releases its secretion by exocytosis without loss of cellular material is classified as which type of gland?

Accepted Answer

Merocrine

Question 7

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

Accepted Answer

Contraction

Question 8

A biopsy from a patient's urinary bladder shows an epithelium with basal cells that appear cuboidal or columnar and apical cells that vary in shape. Which type of epithelium is this?

Accepted Answer

Transitional epithelium

Question 9

Which of the following best describes the role of microvilli on the apical surface of epithelial cells in the small intestine?

Accepted Answer

Increase surface area for absorption

Question 10

A multicellular exocrine gland with a branched duct and secretory cells arranged in sac-like clusters is classified as which type of gland?

Accepted Answer

Compound alveolar (acinar)

Question 11

Which of the following statements about the basal lamina is correct?

Accepted Answer

It acts as a selective filter and scaffolding for cell migration in wound repair

Question 12

A researcher is studying a tissue that lines the trachea and observes cells of varying heights, some with cilia, and nuclei at different levels. Which type of epithelium is being observed?

Accepted Answer

Pseudostratified columnar epithelium

Question 13

Which of the following best explains why stratified squamous epithelium is found in areas subject to abrasion, such as the skin and esophagus?

Accepted Answer

It provides a thick, protective barrier due to multiple cell layers

Question 14

Which of the following equations best represents the relationship between the rate of diffusion ($$R$$), surface area ($$A$$), and thickness of the membrane ($$d) in $$simple squamous epithelium?

Accepted Answer

$$R = \frac{A}{d}$$

Question 15

Which of the following is a key difference between endocrine and exocrine glands?

Accepted Answer

Endocrine glands are ductless and secrete hormones into the blood; exocrine glands secrete via ducts onto surfaces

Question 16

A patient with cystic fibrosis has thick mucus in the respiratory tract due to malfunctioning goblet cells. Which type of gland are goblet cells classified as?

Accepted Answer

Unicellular exocrine gland

Question 17

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

Accepted Answer

Prevent substances from passing between adjacent cells

Question 18

A tissue sample from a sweat gland shows two layers of cube-shaped cells. Which type of epithelium is this?

Accepted Answer

Stratified cuboidal epithelium

Question 19

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

Accepted Answer

Regeneration is stimulated by loss of apical-basal polarity and lateral contacts

Question 20

Which of the following best explains why the lining of the stomach is composed of simple columnar epithelium rather than stratified squamous epithelium?

Accepted Answer

Simple columnar epithelium is specialized for absorption and secretion

Tissue: The Living Fabric – Epithelial Tissue Study Notes

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