5.1 Homeostasis

Question 1

What is homeostasis?

Answer 1

Homeostasis is the maintenance of a constant internal environment in order to maintain optimum conditions for enzyme and cellular function.

Question 2

Give examples of conditions maintained by homeostasis in the body

Answer 2

● Blood glucose concentration
● Body temperature
● Water levels

Question 3

What two types of responses are used in body control systems?

Answer 3

Nervous and chemical

Question 4

What three components do all control systems have?

Answer 4

Control systems have:
● Receptors
● Coordination centres
● Effectors

Question 5

What is the function of a receptor?

Answer 5

Receptors detect changes in the environment (stimuli).

Question 6

What is the function of a coordination centre?

Answer 6

Coordination centres obtain and process information from receptors.

Question 7

What is the function of an effector?

Answer 7

Effectors (muscles or glands) bring about responses to stimuli.