B10 Nervous System And Control

Question 1

What is homostatis

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

Why is homostatis important?

Answer 2

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

Question 3

What does homostatis do in the human body?

Answer 3

In the human body homeostasis includes control of blood glucose concentration, body temperature, and water levels.

Question 4

What do all control systems involve?

Answer 4

All control systems include receptors, coordination centres, and effectors.

Question 5

What does the nervous system use?

Answer 5

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

Question 6

What do impulses from the receptors do?

Answer 6

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.