4.5.1 Homeostasis (might come up) P2

Question 1

What is homeostasis

Answer 1

The maintenance of a constant internal environment in order to maintain optimum conditions for enzyme and cellular function

Question 2

3 conditions maintained by homeostasis in the body

Answer 2

Blood glucose concentration
Body temperature
Water levels

Question 3

What 2 types of responses are used in body control systems

Answer 3

Nervous and chemical

Question 4

What 3 components do all control systems have

Answer 4

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 are some coordination centres

Answer 7

The brain, spinal cord and pancreas

Question 8

What is the function of an effector

Answer 8

Effectors (muscles or glands) bring about responses to stimuli