Question 1

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

Accepted Answer

The maintenance of a stable internal environment despite external changes.

Question 2

A patient is experiencing a drop in body temperature. Which of the following best describes the sequence of events that would occur to restore homeostasis?

Accepted Answer

Stimulus → Receptor detects change → Information sent along afferent pathway → Control center processes → Information sent along efferent pathway → Effector responds → Homeostasis restored

Question 3

Which of the following is NOT a requirement for maintaining life in humans?

Accepted Answer

High atmospheric pressure

Question 4

A person is unable to properly break down and absorb nutrients from food. Which level of organization is most directly affected?

Accepted Answer

Organ system level

Question 5

Which of the following best explains why water is essential for life?

Accepted Answer

Water acts as a medium for chemical reactions and is required for secretion and excretion.

Question 6

A patient has a body temperature of $$39^\circ C. $$Which of the following best describes the physiological response to restore normal body temperature?

Accepted Answer

Sweat glands are activated to increase heat loss through evaporation.

Question 7

Which of the following is the correct order of increasing complexity in the organization of life?

Accepted Answer

Chemical → Cellular → Tissue → Organ → Organ system → Organism

Question 8

A person inhales air containing $$21\%$$ oxygen and $$78\%$$ nitrogen. Which of the following statements best explains the importance of oxygen in this scenario?

Accepted Answer

Oxygen is required for cellular respiration, which produces ATP for cellular energy.

Question 9

A patient has a puncture wound in the left lumbar region. Which organ is most likely to be affected?

Accepted Answer

Descending colon

Question 10

Which of the following best describes the function of the dorsal cavity?

Accepted Answer

It houses the brain and the spinal cord.

Question 11

A patient is diagnosed with a tumor in the mediastinum. Which of the following structures is most likely to be affected?

Accepted Answer

Esophagus

Question 12

Which of the following best explains why pressure is needed for survival?

Accepted Answer

Pressure is required for proper gas exchange in the lungs and to move blood through vessels.

Question 13

A person is unable to sense changes in their internal environment. Which component of the homeostatic control system is most likely malfunctioning?

Accepted Answer

Receptor

Question 14

Which of the following is an example of a negative feedback mechanism?

Accepted Answer

Blood glucose regulation by insulin and glucagon

Question 15

A patient has a stab wound in the right hypochondriac region. Which organ is most likely to be injured?

Accepted Answer

Liver

Question 16

Which of the following best describes the function of the pericardial cavity?

Accepted Answer

It surrounds and protects the heart.

Question 17

A person is exposed to a cold environment and begins to shiver. Which of the following best describes the role of shivering in this scenario?

Accepted Answer

Shivering increases muscle activity to generate heat and raise body temperature.

Question 18

Which of the following statements about the ventral cavity is correct?

Accepted Answer

It houses the visceral organs, including the heart, lungs, and digestive organs.

Question 19

A patient is unable to produce new skin cells after an injury. Which life process is most directly impaired?

Accepted Answer

Reproduction (of cells)

Question 20

Which of the following best describes the function of the effector in a homeostatic control system?

Accepted Answer

It carries out the response to restore homeostasis.

Fundamentals of Human Anatomy & Physiology: Organization, Homeostasis, and Body Cavities

Study Guide - Practice Questions

Study Guide - Flashcards