nervous system - lesson 4

Question 1

function of motor neurons

Answer 1

carries the impulse away from the spinal cord

Question 2

the function of sensory neurons

Answer 2

sends messages from receptors to the brain

- carry info that determines movement required

Question 3

what is the spinal cord?

Answer 3

highway for neural traffic

- relays info from the brain to body + body to the brain

Question 4

describe the dendrites

Answer 4

short branches in the spinal cord that carries impulses to the cell body

Question 5

describe the cell body

Answer 5

direct neuron activity

Question 6

describe the axon

Answer 6

carry impulses out of the cell body to muscle fibers

Question 7

describe the motor end plates

Answer 7

connect axon to muscle fibers

Question 8

how is a nerve impulse sent from the brain?

Answer 8

• the message is sent from the brain, as an AP down the spinal cord through to the motor neuron which innervates required muscle fibers

Question 9

five key components of the neuromuscular system and the order they occur

Answer 9

sensory neuron > brain > spinal cord > motor neuron > motor unit