Question 1

Which of the following best describes the concept of homeostasis in the human body?

Accepted Answer

The process by which the body maintains a stable internal environment despite changes in external conditions.

Question 2

A patient is given intravenous fluids that are hypotonic compared to their blood plasma. What is the most likely effect on their red blood cells?

Accepted Answer

Red blood cells will swell and may burst due to water influx.

Question 3

Which of the following is an example of negative feedback in human physiology?

Accepted Answer

Regulation of blood glucose levels by insulin.

Question 4

Facilitated diffusion differs from simple diffusion in that:

Accepted Answer

It requires membrane proteins to transport substances across the cell membrane.

Question 5

Which layer of the epidermis is responsible for the production of keratin?

Accepted Answer

Stratum granulosum

Question 6

A person suffers a deep cut that penetrates the dermis. Which of the following is the correct sequence of the four stages of deep wound healing?

Accepted Answer

Inflammatory, migratory, proliferative, maturation

Question 7

Which of the following best describes the function of mast cells in connective tissue?

Accepted Answer

They release histamine and other mediators during inflammation.

Question 8

Which type of cartilage is found in the intervertebral discs and is characterized by thick bundles of collagen fibers?

Accepted Answer

Fibrocartilage

Question 9

A neuron is composed of several parts. Which part is primarily responsible for receiving incoming signals from other neurons?

Accepted Answer

Dendrites

Question 10

Which of the following equations correctly represents the osmotic pressure ($$\Pi) of a $$solution, where $$C is $$the molar concentration, $$R is $$the gas constant, and $$T is $$the temperature in Kelvin?

Accepted Answer

$$\Pi = CRT$$

Question 11

Which of the following best describes the role of the pericardium?

Accepted Answer

It encloses and protects the heart, reducing friction during heartbeats.

Question 12

A patient presents with an infection in the pleural membrane. What is the medical term for this condition?

Accepted Answer

Pleuritis

Question 13

Which of the following is a function of the glyocalyx found on the surface of epithelial cells?

Accepted Answer

Cell recognition and protection from mechanical and chemical damage.

Question 14

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 15

Which of the following is NOT a function of neuroglia cells?

Accepted Answer

Conducting electrical impulses

Question 16

Which of the following best describes the difference between positive and negative feedback mechanisms?

Accepted Answer

Negative feedback reverses a change to maintain homeostasis, while positive feedback amplifies a change until a specific outcome is achieved.

Question 17

Which connective tissue fiber provides great tensile strength and is the most abundant in the human body?

Accepted Answer

Collagen fibers

Question 18

A patient is diagnosed with edema due to increased permeability of capillaries. Which type of cell is most likely responsible for releasing histamine that causes this effect?

Accepted Answer

Mast cell

Question 19

Which of the following best describes the function of the basement membrane in epithelial tissue?

Accepted Answer

It anchors epithelial cells to underlying connective tissue and regulates exchange of molecules.

Question 20

Which of the following is a real-life example of facilitated diffusion in human physiology?

Accepted Answer

Glucose transport into muscle cells via GLUT4 transporter

Anatomy & Physiology Test 1 Review: Key Terms and Concepts

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