Chapter 1.2 (page 10)

Question 1

What are the three basic components of homeostatic control mechanisms?

Answer 1

Receptor

Control Centre

Effector

Question 2

Activation of Hypothalamic-Pituitary-Adrenal Axis (HPA Axis ) is a part of the _______________ of the body when homeostasis of the body is interrupted.

Answer 2

Stress-Adaptation Mechanism

Question 3

This component of the homeostatic control mechanism is responsible for monitoring and responding to the changes in its environment, and sending a message (stimuli) to the control centre.

Answer 3

Receptor

Question 4

___________ is the the sum of the chemical and physical changes occurring in tissues. It consists of processes that are called ________ and ________.

Answer 4

Metabolism

• Anabolism
• Catabolism

Question 5

___________ is the state of equilibrium in the body with respect to various functions and to the chemical compositions of the fluids and tissues.

Answer 5

Homeostasis

Question 6

This is a range of conditions where cellular processes are able to function at a level consistent with the continuation of life.

Answer 6

Tolerance Limits

Question 7

This component of the homeostatic control mechanism is responsible for determining the set level at which something is to be maintained and then enacting the appropriate response upon receipt of the stimuli.

Answer 7

Control Centre

Question 8

________ is when the response increases the original stimulus.

________ is when the response decreases the original stimulus.

Answer 8

Positive Feedback

Negative Feedback

Question 9

This is the most common homeostatic control mechanism in biological systems.

Answer 9

Negative Feedback