Question 1

Which of the following best describes the main function of keratin in the epidermis?

Accepted Answer

Provides protection and waterproofing to the skin

Question 2

A tissue sample is observed to have densely packed cells with minimal extracellular material, no blood vessels, and is anchored to a basement membrane. Which type of tissue is this most likely to be?

Accepted Answer

Epithelial tissue

Question 3

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

Accepted Answer

Abundant extracellular matrix

Question 4

A researcher is studying a gland that releases its product by exocytosis without losing any part of the cell. Which type of secretion is this?

Accepted Answer

Merocrine

Question 5

Which of the following best explains why epithelial tissues are able to regenerate rapidly?

Accepted Answer

They contain stem cells in the basal layer that divide to replace lost or damaged cells

Question 6

A histology slide shows cells that appear layered, but all touch the basement membrane. What is the best term to describe this epithelium?

Accepted Answer

Pseudostratified

Question 7

Which of the following is a correct pairing of a membrane type and its primary function?

Accepted Answer

Mucous membrane – lines passages open to the outside

Question 8

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

Accepted Answer

Endocrine glands secrete hormones into blood; exocrine glands secrete substances onto surfaces or into ducts

Question 9

A patient has a genetic defect affecting the basal lamina. Which of the following tissue functions is most likely to be impaired?

Accepted Answer

Anchoring of epithelial cells to underlying connective tissue

Question 10

Which of the following best describes the role of microvilli in epithelial cells?

Accepted Answer

Increase surface area for absorption

Question 11

A glandular cell releases its product by pinching off the apical portion of the cell, which then repairs itself. What type of secretion is this?

Accepted Answer

Apocrine

Question 12

Which of the following is a correct description of the three primary germ layers and a structure they give rise to?

Accepted Answer

Mesoderm – forms skeletal muscle

Question 13

A tissue is described as having distinct apical, lateral, and basal surfaces. Which property of epithelial tissue does this describe?

Accepted Answer

Polarity

Question 14

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

Accepted Answer

They rely on diffusion of nutrients from underlying connective tissue

Question 15

Which of the following is a correct formula for calculating the surface area ($$A) of a $$cuboidal epithelial cell with side length $$l$$?

Accepted Answer

$$A = 6l^2$

Question 16

A biopsy reveals a gland that consists of a single cell secreting mucus. Which of the following best describes this gland?

Accepted Answer

Unicellular exocrine gland

Question 17

Which of the following is NOT a function of the basement membrane?

Accepted Answer

Serves as a site for rapid cell division

Question 18

A patient has a mutation that prevents the formation of desmosomes in epithelial tissue. Which of the following is the most likely consequence?

Accepted Answer

Reduced cell-to-cell adhesion

Question 19

Which of the following best describes the difference between mesothelium and endothelium?

Accepted Answer

Mesothelium lines body cavities; endothelium lines blood vessels

Question 20

A sweat gland is classified as a simple coiled tubular gland that releases its product by exocytosis. Which two criteria are used to classify this gland?

Accepted Answer

Structure and secretion type

Tissues and Epithelial Tissue: Structure, Function, and Classification

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