part 4

Question 1

Write in order the steps for a coordinated response.

Answer 1

Stimulus, 
receptor, 
sensory neuron, 
CNS (relay neuron), 
motor neuron, 
effector,  
response.

Question 2

What are the 2 roles of the fatty sheath in a neuron?

Answer 2

Act as an electrical insulator

Speed up the nerve impulse

Question 3

What is a reflex?

Answer 3

Involuntary, quick, and automatic responses.