Question 1

Which type of epithelial tissue is best adapted for rapid diffusion of gases in the lungs, and why?

Accepted Answer

Simple squamous epithelium, because its single layer of thin, flat cells facilitates rapid diffusion.

Question 2

A patient presents with a burn that destroys the outer layer of skin. Which epithelial tissue is primarily affected, and what is its main function?

Accepted Answer

Stratified squamous epithelium; protection against abrasion.

Question 3

Which of the following best describes the structure and function of transitional epithelium?

Accepted Answer

It consists of several layers of cells that can stretch and return to their original shape, allowing the urinary bladder to distend.

Question 4

Which gland type releases its entire cell as part of its secretion, and what is an example?

Accepted Answer

Holocrine gland; sebaceous gland.

Question 5

A histology slide shows a duct with a single, unbranched tube-shaped secretory portion. Which type of gland is this, and where is it commonly found?

Accepted Answer

Simple tubular gland; found in the large intestine.

Question 6

Which of the following best explains why skeletal muscle fibers are multinucleated and striated?

Accepted Answer

They are formed by the fusion of multiple cells and contain organized myofibrils, resulting in striations.

Question 7

Which muscle tissue type is responsible for involuntary contractions in the walls of the stomach and urinary bladder, and what is a key structural feature?

Accepted Answer

Smooth muscle; non-striated, spindle-shaped cells.

Question 8

Which of the following best describes the function of dendrites in a neuron?

Accepted Answer

They receive signals from other neurons and conduct electrical signals toward the cell body.

Question 9

A researcher is studying a gland that releases a watery fluid containing digestive enzymes into a duct. Which type of gland is this, and what is the mode of secretion?

Accepted Answer

Serous exocrine gland; merocrine secretion.

Question 10

Which of the following is a correct pairing of epithelial tissue and its primary location/function?

Accepted Answer

Stratified columnar epithelium; found in the vas deferens and parts of the pharynx.

Question 11

Which of the following best explains why cardiac muscle cells can contract in a coordinated manner without conscious control?

Accepted Answer

They contain intercalated discs and are regulated by a pacemaker.

Question 12

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

Accepted Answer

Simple glands have a single unbranched duct, while compound glands have multiple branched ducts.

Question 13

A patient has a genetic defect affecting the production of mucous in the respiratory tract. Which cell type and glandular secretion are most likely affected?

Accepted Answer

Goblet cells; mucous secretion.

Question 14

Which of the following best describes the role of axons in neurons?

Accepted Answer

They transmit nerve impulses away from the cell body to other neurons or effectors.

Question 15

Which of the following is a function of exocrine glands in the human body?

Accepted Answer

Secretion of digestive enzymes into ducts.

Question 16

Which muscle tissue type is most likely to be affected in a patient with difficulty swallowing due to impaired peristalsis in the esophagus?

Accepted Answer

Smooth muscle.

Question 17

Which of the following best describes the arrangement and function of pseudostratified columnar epithelium in the respiratory tract?

Accepted Answer

It appears layered due to nuclei at different levels, contains cilia, and helps sweep debris out of the airways.

Question 18

A gland is observed to have both tubular and alveolar secretory units attached to a branched duct. Which type of gland is this, and where is it commonly found?

Accepted Answer

Compound tubuloalveolar gland; salivary gland.

Question 19

Which of the following best explains why skeletal muscle fibers can generate powerful contractions but fatigue quickly?

Accepted Answer

They are long, multinucleated, striated fibers that contract rapidly and vigorously but tire easily.

Module 4 – Part II: Epithelial, Nervous, and Muscle Tissues (AANPH 8100 - Anatomy & Physiology I)

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