Paper 2

Question 1

What is Homeostasis?

Answer 1

Homeostasis is the regulation of internal conditions to
keep optimum conditions for function in response to internal and external changes.
This is needed for enzyme action
and all cell functions.

Question 2

What does homeostasis control in the body?

Answer 2

Blood glucose concentration
Body temperature
Water levels

Question 3

Receptors

Answer 3

cells that detect stimuli (changes in the environment)

Question 4

Coordination centres

Answer 4

Receive and process information from receptors

eg brain and spinal cord

Question 5

Effectors

Answer 5

bring about responses to bring the conditions in the body back to optimum
levels, e.g. muscles or glands