Question 1

Which of the following best describes the principle of complementarity in anatomy and physiology?

Accepted Answer

The function of a body part depends on its structure, and the structure is designed to perform its function.

Question 2

Arrange the following levels of structural organization in the human body from simplest to most complex: tissue, organ, molecule, cell, organism, organ system.

Accepted Answer

Molecule, cell, tissue, organ, organ system, organism

Question 3

Which of the following is NOT one of the 11 organ systems of the human body?

Accepted Answer

Circulatory system

Question 4

Which functional characteristic is necessary for maintaining life and involves the removal of wastes from the body?

Accepted Answer

Excretion

Question 5

Which of the following is a survival need of the body?

Accepted Answer

Nutrients

Question 6

Homeostasis is best defined as:

Accepted Answer

The process of maintaining a constant internal environment despite external changes.

Question 7

Which of the following best describes negative feedback?

Accepted Answer

A response that reduces or shuts off the original stimulus.

Question 8

Which is an example of a positive feedback mechanism?

Accepted Answer

Blood clotting

Question 9

What is the relationship between homeostatic imbalance and disease?

Accepted Answer

Homeostatic imbalance can lead to disease if the body cannot restore balance.

Question 10

In the homeostatic control diagram, what is the role of the effector?

Accepted Answer

Feeds back to reduce the effect of stimulus and returns variable to homeostatic level

Question 11

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

Accepted Answer

Regulation of body temperature

Question 12

Which step in the homeostatic control diagram is responsible for detecting a change in the variable?

Accepted Answer

Receptor

Question 13

Which of the following statements about positive feedback is correct?

Accepted Answer

Positive feedback mechanisms cause the variable to move further away from its original value.

Question 14

Which pathway in the homeostatic control diagram carries information from the receptor to the control center?

Accepted Answer

Afferent pathway

Question 15

If the variable in a homeostatic system moves away from its set point and the effector acts to bring it back, which type of feedback is occurring?

Accepted Answer

Negative feedback

Question 16

Which of the following is a correct sequence for the homeostatic control mechanism?

Accepted Answer

Stimulus → Receptor → Control Center → Effector → Response

Question 17

Which of the following best describes the function of the control center in homeostatic regulation?

Accepted Answer

Receives input from the receptor and determines the appropriate response

Question 18

Which of the following is NOT a necessary life function?

Accepted Answer

Photosynthesis

Question 19

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

Accepted Answer

Enhancement of labor contractions during childbirth

Question 20

In the homeostatic control diagram, which step is responsible for producing a change in the variable?

Accepted Answer

Stimulus

Guided Study: Homeostatic Control Diagram and Related Concepts

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