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

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

Question 1

Which of the following best describes the function of the basal lamina in epithelial tissue?

Accepted Answer

It acts as a selective filter and supports the epithelial sheet.

Question 2

A patient presents with a tumor originating in the epithelial lining of the colon. What is the most accurate term for this type of cancer?

Accepted Answer

Carcinoma

Question 3

Which epithelial tissue is most adapted for rapid exchange of gases and nutrients, and where is it commonly found?

Accepted Answer

Simple squamous epithelium; air sacs of lungs

Question 4

Which of the following is a distinguishing characteristic of epithelial tissue?

Accepted Answer

Epithelial tissue is avascular but innervated.

Question 5

A gland that releases its secretory product directly into the bloodstream without the use of ducts is classified as:

Accepted Answer

Endocrine

Question 6

Which mode of secretion involves the entire cell rupturing to release its contents, and which gland uses this method?

Accepted Answer

Holocrine; sebaceous glands

Question 7

A biopsy from the lining of the urinary bladder reveals epithelial cells that change shape when stretched. Which type of epithelium is present?

Accepted Answer

Transitional epithelium

Question 8

Which of the following best describes the structural difference between simple and stratified epithelia?

Accepted Answer

Simple epithelia have one layer; stratified epithelia have two or more layers.

Question 9

Which accessory structure increases the surface area for absorption in the small intestine?

Accepted Answer

Microvilli

Question 10

A multicellular exocrine gland with branched ducts and sac-like secretory units is classified as:

Accepted Answer

Compound alveolar gland

Question 11

Which of the following equations best represents the relationship between the surface area ($$A) $$and the number of microvilli ($$n) on an $$epithelial cell, assuming each microvillus has a surface area $$a$$?

Accepted Answer

$$A = n 	imes a$$

Question 12

Which epithelial tissue is most likely to be found lining the ducts of sweat glands and is specialized for secretion of water and ions?

Accepted Answer

Stratified cuboidal epithelium

Question 13

A patient with chronic bronchitis has impaired mucus removal from the airway. Which epithelial specialization is most likely dysfunctional?

Accepted Answer

Cilia

Question 14

Which of the following best describes the naming convention for epithelial tissues?

Accepted Answer

First by number of layers, then by cell shape

Question 15

Which of the following is TRUE regarding the difference between endocrine and exocrine glands?

Accepted Answer

Endocrine glands are ductless and release their products into interstitial spaces.

Question 16

A pathologist observes an epithelial tissue sample with many layers, the apical layer being flat, and deeper layers appearing cuboidal. Which tissue is most likely being observed?

Accepted Answer

Stratified squamous epithelium

Question 17

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

Accepted Answer

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

Question 18

Which mode of secretion is characterized by secretory vesicles fusing with the apical membrane to release their contents, and which gland uses this method?

Accepted Answer

Merocrine; pancreas

Question 19

Which of the following is a benign tumor originating from glandular epithelium?

Accepted Answer

Adenoma

Question 20

Which epithelial tissue is most likely to be found lining the digestive tract and is specialized for absorption and mucus production?

Accepted Answer

Simple columnar epithelium

Chapter 4 - part 1

Guida di studio - Domande di pratica

Study guide - Flashcard