Q: Which equation best represents the rate of diffusion ($$R) $$across a simple squamous epithelium, given the surface area ($$A$$), concentration gradient ($$\Delta C$$), and thickness ($$d$$)?

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

Question 1

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

Accepted Answer

They prevent substances from passing between cells, forcing materials to move through the cells.

Question 2

A researcher observes a tissue sample with cells that are long, cylindrical, multinucleated, and striated. Which type of tissue is being observed?

Accepted Answer

Skeletal muscle tissue

Question 3

Which connective tissue type is primarily responsible for storing energy and providing insulation?

Accepted Answer

Adipose connective tissue

Question 4

Gap junctions are composed of six transmembrane proteins called connexons. What is their primary function in cardiac muscle?

Accepted Answer

To allow direct passage of ions for rapid electrical conduction between cells

Question 5

Which of the following best explains why epithelial tissue can survive despite being avascular?

Accepted Answer

Epithelial tissue is supported by connective tissue, which supplies nutrients and removes waste via diffusion.

Question 6

A patient has a genetic defect in desmosomes. Which symptom would most likely be observed?

Accepted Answer

Fragile skin that blisters easily under mechanical stress

Question 7

Which formula correctly represents the relationship between the number of cell layers ($$n) $$and the total thickness ($$T) of a $$stratified epithelium, if each layer has an average thickness $$t$$?

Accepted Answer

$$T = n 	imes t$$

Question 8

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

Accepted Answer

Goblet cell; secretes mucus

Question 9

Which protein fiber in connective tissue provides the greatest tensile strength?

Accepted Answer

Collagen fibers

Question 10

A tissue sample from the esophagus shows multiple layers of cells, with the apical layer being flat and the basal layer cuboidal. How should this epithelium be classified?

Accepted Answer

Stratified squamous epithelium

Question 11

Which of the following best describes the function of neuroepithelium?

Accepted Answer

It is responsible for sensory functions such as sight, taste, and smell.

Question 12

Which connective tissue type is most likely to be found in tendons and ligaments, and why?

Accepted Answer

Dense regular connective tissue, because its parallel collagen fibers provide strength in one direction.

Question 13

Which equation best represents the total number of nuclei ($$N) in a $$skeletal muscle fiber, given the number of nuclei per unit length ($$n) $$and the fiber length ($$L$$)?

Accepted Answer

$$N = n 	imes L$$

Question 14

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

Accepted Answer

Secretion of hormones

Question 15

A patient is unable to voluntarily control the contraction of their digestive tract muscles. Which muscle tissue is most likely involved?

Accepted Answer

Smooth muscle tissue

Question 16

Which of the following best describes the role of glial cells in nervous tissue?

Accepted Answer

They protect, nourish, and support neurons.

Question 17

Which type of epithelial tissue is best suited for rapid diffusion and filtration, and where is it commonly found?

Accepted Answer

Simple squamous epithelium; alveoli of lungs

Question 18

Which of the following glands releases its secretion by the entire cell rupturing and dying?

Accepted Answer

Holocrine gland

Question 19

Which of the following correctly matches a tissue type with its primary function?

Accepted Answer

Epithelial tissue; forms glands and provides selective permeability

Question 20

Which equation best represents the rate of diffusion ($$R) $$across a simple squamous epithelium, given the surface area ($$A$$), concentration gradient ($$\Delta C$$), and thickness ($$d$$)?

Accepted Answer

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

Chapter 5: Tissues and Glands – Structure, Function, and Interactions

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