CB2e

Question 1

which parts of the human body make up the central nervous system

Answer 1

the brain and the spinal cord

Question 2

what makes up the nervous system

Answer 2

nerves

Question 3

what are the sense organs

Answer 3

eyes, ears and skin

Question 4

what is the traveling, or transmission of impulses called

Answer 4

neurotransmission happens in neurons

Question 5

what’s the function of the sensory neuron

Answer 5

to carry impulses from receptor cells towards the CNS

Question 6

describe the nerve impulse pathway

Answer 6

1. sensory receptor (e.g eyes, skin)
2. sensory neurone
3. central nervous system
4. motor neurone
5. effectors (e.g muscles, sweat glands)

Question 7

what is the myelin sheath

Answer 7

a fatty layer surrounding the dendrons and axons this electrically insulates a neurone from neighbouring neurones

Question 8

what does the myelin sheath do

Answer 8

speed up neurotransmissions

Question 9

what is the function of the sensory receptor

Answer 9

to carry impulses sensed to the sensory neurone

Question 10

what is the function of the CNS

Answer 10

it registers and coordinates responses to the motor neurone

Question 11

what is the function of the motor neurone

Answer 11

to carry impulses to the effector