Question 1

Which of the following best describes the function of simple squamous epithelium in the alveoli of the lungs?

Accepted Answer

Allows rapid diffusion of gases such as O$$_2$$ and CO$$_2$$

Question 2

A patient presents with a second-degree burn affecting the epidermis and part of the dermis. Which epithelial tissue is primarily damaged, and what is its main function?

Accepted Answer

Keratinized stratified squamous epithelium; protection against abrasion and water loss

Question 3

Which cell junction is most critical in preventing leakage of intestinal contents between epithelial cells?

Accepted Answer

Tight junctions

Question 4

In the trachea, which epithelial tissue is responsible for moving mucus upward toward the pharynx, and what cellular feature enables this function?

Accepted Answer

Pseudostratified ciliated columnar epithelium; cilia

Question 5

Which connective tissue type forms the internal skeleton (stroma) of lymphoid organs such as the spleen and lymph nodes?

Accepted Answer

Reticular connective tissue

Question 6

A tendon is composed primarily of which connective tissue, and what is its main function?

Accepted Answer

Dense regular connective tissue; attaches muscle to bone and withstands tensile stress

Question 7

Which of the following best explains why hyaline cartilage is found at the ends of long bones in joints?

Accepted Answer

Its matrix resists compressive stress and provides a resilient cushion

Question 8

A patient with chronic knee pain and imaging showing cartilage loss is most likely experiencing degeneration of which tissue, and what clinical challenge does this pose?

Accepted Answer

Hyaline cartilage; limited ability to repair due to avascularity

Question 9

Which membrane lines body cavities that are open to the exterior, such as the nasal cavity and mouth?

Accepted Answer

Mucous membrane

Question 10

Which muscle tissue is characterized by long, cylindrical, multinucleate cells with obvious striations and is under voluntary control?

Accepted Answer

Skeletal muscle

Question 11

Gap junctions are especially important in which tissue, and what is their primary function?

Accepted Answer

Cardiac muscle; allow ions and small molecules to pass for synchronized contraction

Question 12

Which connective tissue is most abundant in the dermis of the skin and provides structural strength by withstanding tension in multiple directions?

Accepted Answer

Dense irregular connective tissue

Question 13

Which of the following is a unique feature of transitional epithelium, and where is it clinically crucial?

Accepted Answer

Ability to stretch and change shape; lining the urinary bladder

Question 14

Which cell type in areolar connective tissue is primarily responsible for phagocytizing bacteria during inflammation?

Accepted Answer

Macrophage

Question 15

Which tissue is described as having a hard, calcified matrix with collagen fibers, and is the site for blood cell formation?

Accepted Answer

Bone tissue

Question 16

Which of the following best describes the function of microvilli on epithelial cells in the small intestine?

Accepted Answer

Increase surface area for absorption

Question 17

Which of the following equations best represents the relationship between surface area and absorption rate in epithelial tissues with microvilli?

Accepted Answer

$$	ext{Absorption Rate} \propto 	ext{Surface Area}$$

Question 18

Which tissue type is most likely to be affected in a patient with a ruptured intervertebral disc, and what is its primary function?

Accepted Answer

Fibrocartilage; absorbs compressive shock due to thick collagen fibers

Question 19

Which of the following is a major function of blood as a connective tissue?

Accepted Answer

Transports respiratory gases, nutrients, wastes, and other substances

Question 20

Which equation best describes the relationship between the tensile strength ($$T) of a $$tendon and the amount of collagen fibers ($$C) $$present?

Accepted Answer

$$T \propto C$$

Tissues: Structure, Function, and Clinical Relevance

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