Nervous System

Question 1

What are the uses of the nervous system?

Answer 1

Enables humans to react to their surroundings and coordinate their behaviour.

Question 2

Reflex Arc

Answer 2

• Rapid, automatic response.
  1) Stimuli
  2) Receptor
  3) Sensory neurone

(synapse - electrical impulse to chemical which diffuses across the synapse)

4) Relay neurone
5) Motor neurone
6) Effector - muscle (contraction)/gland (secreting a chemical)