Q: Which equation best represents the rate of diffusion ($$J) $$across a simple squamous epithelium, given permeability ($$P$$), surface area ($$A$$), and concentration difference ($$\Delta C$$)?

$$J = P \times A \times \Delta C$$

Question 1

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

Accepted Answer

They form an impermeable seal between adjacent cells, preventing passage of substances.

Question 2

Which component of the extracellular matrix is primarily responsible for attracting water molecules and providing tissue hydration?

Accepted Answer

Glycosaminoglycans (GAGs)

Question 3

A tissue sample shows cells that are long, cylindrical, and multinucleated. Which primary tissue class does this most likely represent?

Accepted Answer

Muscle tissue

Question 4

Which type of epithelial tissue is best suited for rapid diffusion and is found lining the alveoli of the lungs?

Accepted Answer

Simple squamous epithelium

Question 5

Which formula correctly represents the calculation of the surface area ($$A) of a $$simple squamous epithelial sheet covering a circular organ with radius $$r$$?

Accepted Answer

$$A = \pi r^2$

Question 6

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

Accepted Answer

Fragile skin that blisters easily under mechanical stress

Question 7

Which of the following is a correct match between epithelial tissue type and its primary function?

Accepted Answer

Simple columnar epithelium – secretion and absorption

Question 8

Which type of gland releases its product by rupturing the entire cell, as seen in sebaceous glands?

Accepted Answer

Holocrine gland

Question 9

Which of the following best explains why simple columnar epithelium is found lining the small intestine?

Accepted Answer

Its tall cells and microvilli increase surface area for absorption.

Question 10

Which of the following cell morphologies is most likely to be found in nervous tissue?

Accepted Answer

Stellate

Question 11

A multicellular exocrine gland with a branched duct and acinar secretory units is classified as:

Accepted Answer

Compound acinar

Question 12

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

Accepted Answer

Generating electrical impulses

Question 13

Which equation best represents the rate of diffusion ($$J) $$across a simple squamous epithelium, given permeability ($$P$$), surface area ($$A$$), and concentration difference ($$\Delta C$$)?

Accepted Answer

$$J = P 	imes A 	imes \Delta C$$

Question 14

Which of the following statements about endocrine glands is correct?

Accepted Answer

They release hormones directly into the bloodstream.

Question 15

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

Accepted Answer

Transitional epithelium

Question 16

Which of the following best describes the role of proteoglycans in the extracellular matrix?

Accepted Answer

They form bottle-brush structures that bind water and contribute to matrix resilience.

Question 17

Which of the following is a correct statement about the basement membrane in epithelial tissue?

Accepted Answer

It separates epithelial cells from underlying connective tissue and provides structural support.

Question 18

A histological slide shows multiple layers of flat, scaly cells with a layer of dead cells at the surface. What type of epithelium is this?

Accepted Answer

Keratinized stratified squamous epithelium

Question 19

Which of the following best explains why gap junctions are important in cardiac muscle tissue?

Accepted Answer

They allow rapid passage of ions and electrical signals between cells for synchronized contraction.

Question 20

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

Accepted Answer

All cells touch the basement membrane but nuclei are at different heights.

Histology I: Introduction to Tissues and Epithelial Tissue

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