B10

Question 1

What is homeostasis

Answer 1

Homeostasis is the regulation of the internal conditions of a cell or organism to maintain optimum conditions for function, in response to internal and external changes.

Question 2

What do all control systems include

Answer 2

Receptors, coordination centres and effectors

Question 3

Why is homeostasis important

Answer 3

Homeostasis is important for maintaining optimal conditions for enzyme action and all cell functions

Question 4

What does homeostasis control in a human body?

Answer 4

In a human body Homeostasis includes control of blood glucose concentration, body temperature, and water levels.

Question 5

What might automatic control systems include

Answer 5

The automatic control systems may involve nervouse or chemical responses

Question 6

What do receptors do?

Answer 6

Cells called receptors detect stimuli (changes in the environment)

Question 7

How does the nervous system use electrical impulses?

Answer 7

The nervous system uses electrical impulses to eneable you to react quickly to your surroundings and coordinate your behaviour .

Question 8

Hiw dies the nervous system work

Answer 8

Impulses from receptors pass along sensory neurones to the brain or spinal cord(CNS). The brain coordinates the response, and impulses are sent along motor neurones from the brain(CNS) to the effector organs