Response

Question 1

Put these steps in order 
receptor
stimulus
s/n
coordinator
response
effector
motor neurones

Answer 1

stimulus(light,heat)
receptor(sense organ nose ,eyes)
sensory neurone
coordinator(brain and spinal cord)
relay /n
motor/n
effector(muscle,gland)
response (movement,sound)

Question 2

Name 3 main neurones

Answer 2

motor
relay
sensory

Question 3

structure of each neurone

Answer 3

s-dendron and axon,cell body in middle of neurone
m-short dendrites,axon
r-many short dendrites,axon

Question 4

Function of the neurones

Answer 4

s- dendron carry impulses from receptor cells towards cell body,then short axon carries it towards CNS
r-found inbetween m and s n they allow impulses to be carried up and down.
m-axon carries impulse away from cell body to effector

Question 5

Mylin sheath is important

Answer 5

Insulates nerve cell

Makes impulse travel quicker