Question 1

Which of the following best describes the main function of epithelial tissue in the human body?

Accepted Answer

It covers and lines surfaces, forming physical barriers and glands.

Question 2

A tissue sample from the lining of blood vessels is examined under a microscope. The cells are flat, thin, and form a single layer. Which type of epithelium is this most likely to be?

Accepted Answer

Simple squamous epithelium

Question 3

Which of the following statements about the extracellular matrix (ECM) is correct?

Accepted Answer

The ECM is composed of proteins and interstitial fluid, and its composition varies among tissue types.

Question 4

A patient has a genetic defect affecting desmosomes. Which tissue function is most likely to be compromised?

Accepted Answer

Anchoring and holding epithelial cells together under mechanical stress

Question 5

Which of the following best distinguishes simple columnar epithelium from pseudostratified columnar epithelium?

Accepted Answer

Pseudostratified columnar epithelium appears to have multiple layers due to nuclei at different levels, but all cells contact the basement membrane.

Question 6

Which type of epithelial tissue is specialized to stretch and is found lining the urinary bladder?

Accepted Answer

Transitional epithelium

Question 7

A gland that releases its secretion by exocytosis without losing any part of the cell is classified as which type?

Accepted Answer

Merocrine

Question 8

Which of the following is a correct pairing of a specialized epithelial cell type and its location?

Accepted Answer

Simple cuboidal epithelium – kidney tubules

Question 9

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

Accepted Answer

Exocrine glands secrete their products onto surfaces via ducts, while endocrine glands release hormones into the blood.

Question 10

A tissue sample shows multiple layers of cells, with the apical layer consisting of flat, scale-like cells. Which type of epithelium is this?

Accepted Answer

Stratified squamous epithelium

Question 11

Which of the following cell junctions allows for direct communication between adjacent epithelial cells by permitting the passage of ions and small molecules?

Accepted Answer

Gap junctions

Question 12

A multicellular gland with a branched duct and spherical secretory portions is classified as which of the following?

Accepted Answer

Compound acinar (alveolar) gland

Question 13

Which of the following best explains why epithelial tissues are avascular?

Accepted Answer

They receive nutrients by diffusion from underlying connective tissues.

Question 14

A biopsy from the trachea reveals an epithelium with cilia and nuclei at different heights, but all cells contact the basement membrane. What is the most likely type of epithelium?

Accepted Answer

Pseudostratified ciliated columnar epithelium

Question 15

Which of the following is a function of the basement membrane in epithelial tissues?

Accepted Answer

It filters substances and attaches the epithelium to underlying tissues.

Question 16

Which of the following best describes the difference between keratinized and non-keratinized stratified squamous epithelium?

Accepted Answer

Keratinized epithelium has a surface layer of dead cells filled with keratin, providing extra protection against abrasion.

Question 17

A glandular cell releases its secretion by accumulating the product and then rupturing, destroying the entire cell. Which mode of secretion is this?

Accepted Answer

Holocrine

Question 18

Which of the following is a correct example of a unicellular exocrine gland?

Accepted Answer

Goblet cell

Question 19

Which of the following best explains why simple squamous epithelium is well-suited for gas exchange in the lungs?

Accepted Answer

Its thin, single layer of flat cells allows for rapid diffusion of gases.

Question 20

A patient with a burn injury loses the ability to regenerate the outermost layer of their skin. Which property of epithelial tissue is most directly affected?

Accepted Answer

Regeneration

Tissues: Structure, Types, and Characteristics (Anatomy & Physiology I)

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