Question 1

Which of the following best describes the difference between anatomy and physiology?

Accepted Answer

Anatomy focuses on the structure of body parts, whereas physiology focuses on their function.

Question 2

Which of the following is the correct sequence for the levels of structural organization in the human body, from simplest to most complex?

Accepted Answer

Atoms, molecules, organelles, cells, tissues, organs, organ systems, organism

Question 3

Which environmental factor is MOST directly required for metabolic reactions to occur efficiently in the human body?

Accepted Answer

Heat

Question 4

A patient is unable to maintain a stable internal temperature despite changes in the external environment. Which concept is MOST directly affected?

Accepted Answer

Homeostasis

Question 5

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

Accepted Answer

Regulation of blood glucose levels by insulin

Question 6

In a homeostatic feedback loop, what is the role of the effector?

Accepted Answer

To carry out the response and adjust the variable

Question 7

Which of the following is NOT one of the five environmental factors required to sustain human life?

Accepted Answer

Light

Question 8

A person’s blood pressure fluctuates within a narrow range throughout the day. This is an example of:

Accepted Answer

Dynamic equilibrium maintained by homeostasis

Question 9

Which of the following best explains why it is important to appreciate anatomical and physiological variation among individuals?

Accepted Answer

Because physiological differences can affect medical treatment and diagnosis

Question 10

Which of the following is the correct order of events in a typical negative feedback loop?

Accepted Answer

Stimulus → Receptor → Control Center → Effector

Question 11

Which of the following is a function of water as an environmental factor for sustaining life?

Accepted Answer

Allows most chemical reactions to occur

Question 12

A person is exposed to cold temperatures and begins to shiver, raising their body temperature back to normal. Which part of the feedback loop is responsible for initiating shivering?

Accepted Answer

Control center

Question 13

Which of the following is an example of physiological variation?

Accepted Answer

Variation in heart rate due to age and physical activity

Question 14

Which of the following statements about homeostasis is TRUE?

Accepted Answer

Homeostasis maintains a stable internal environment despite external changes.

Question 15

Which of the following is a correct example of a receptor in a homeostatic feedback system?

Accepted Answer

Thermoceptors detecting temperature changes

Question 16

If the control center in a feedback loop fails to function, which of the following is MOST likely to occur?

Accepted Answer

The body will be unable to maintain homeostasis.

Question 17

Which of the following best describes the role of pressure as an environmental factor for life?

Accepted Answer

It is required for gas exchange during respiration.

Question 18

Which of the following is NOT a function associated with living organisms?

Accepted Answer

Evaporation

Question 19

A person’s metabolic rate increases after eating a meal. Which environmental factor is MOST directly involved in this change?

Accepted Answer

Food

Question 20

Which of the following best describes the concept of dynamic equilibrium in homeostasis?

Accepted Answer

A state where physiological variables fluctuate within a limited range around a set point

Introduction to Anatomy & Physiology: Structural Organization and Homeostasis

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