Question 1

Which of the following best describes the primary function of epithelial tissue in the human body?

Accepted Answer

Covering surfaces and lining cavities to protect and regulate exchange

Question 2

A patient presents with severe dehydration. Which type of epithelial tissue would be most affected in the lining of their intestines, and why?

Accepted Answer

Simple columnar, because it is specialized for absorption and secretion

Question 3

Which of the following is NOT a component of the extracellular matrix in connective tissue?

Accepted Answer

Keratin granules

Question 4

Which equation best represents the relationship between osmotic pressure ($$\Pi$$), solute concentration ($$C$$), gas constant ($$R$$), and temperature ($$T$$)?

Accepted Answer

$$\Pi = CRT$$

Question 5

A patient with cystic fibrosis has a mutation affecting chloride channels in their epithelial cells. Which process is most directly impaired?

Accepted Answer

Regulation of water movement across membranes

Question 6

Which of the following best explains why negative feedback loops are essential for homeostasis?

Accepted Answer

They maintain stability by counteracting deviations from a set point

Question 7

Which of the following is a correct example of a negative feedback loop in thermoregulation?

Accepted Answer

Shivering when body temperature drops below normal

Question 8

Which cell junction type is most important for preventing leakage between cells in epithelial tissue?

Accepted Answer

Tight junctions

Question 9

A patient is unable to absorb nutrients efficiently due to damage in their small intestine. Which structural feature is most likely compromised?

Accepted Answer

Microvilli

Question 10

Which of the following best describes the role of the Na$$^+/K$^+$$ pump in maintaining cellular homeostasis?

Accepted Answer

It actively transports sodium out and potassium into the cell, maintaining electrochemical gradients

Question 11

Which of the following is a function of connective tissue?

Accepted Answer

Support, protection, and binding of other tissues

Question 12

Which of the following best explains the difference between endocrine and exocrine glands?

Accepted Answer

Endocrine glands secrete hormones directly into the blood; exocrine glands secrete products into ducts

Question 13

Which of the following is a correct description of the function of gap junctions?

Accepted Answer

They allow direct communication between adjacent cells

Question 14

A patient with severe burns loses the protective barrier of their skin. Which layer is most critical for preventing water loss and infection?

Accepted Answer

Epidermis

Question 15

Which of the following best describes the process of facilitated diffusion?

Accepted Answer

Movement of molecules down their concentration gradient via a transport protein

Question 16

Which of the following is a correct example of a positive feedback loop?

Accepted Answer

Release of oxytocin during childbirth to intensify uterine contractions

Question 17

Which of the following terms best describes the condition of abnormally high body temperature?

Accepted Answer

Hyperthermia

Question 18

Which of the following is a function of the basement membrane in epithelial tissue?

Accepted Answer

Anchoring epithelial cells to underlying connective tissue

Question 19

A patient with Addison's disease has impaired adrenal gland function. Which hormone is most likely deficient?

Accepted Answer

Cortisol

Question 20

Which of the following best describes the role of keratin in the epidermis?

Accepted Answer

It acts as a waterproof barrier and protects against abrasion

Exam #1 Study Guide: Foundations of Anatomy & Physiology

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