Structure and function

Question 1

sensory neuron

Answer 1

found in receptors- eyes ears tongue skin

convey information about sensory stimuli

Question 2

relay neuron

Answer 2

found in the spinal cord and brain and allow sensory and motor neurone to communicate

Question 3

motor neuron

Answer 3

found in CNS

control muscle movements

Question 4

sensory neuron function

Answer 4

carry nerve impulses to spinal cord and brain which are translated into sensations– vision hearing touch

Question 5

motor neuron function

Answer 5

when stimulated they release neurotransmitters that bind to the receptors on muscles to trigger a response

Question 6

the cell body is also known as

Answer 6

the control centre

Question 7

dendrite

Answer 7

receive signals from other neurons or sensory receptors cells

Question 8

synaptic transmission pathway

Answer 8

1- electrical impulse passed down axon of neuron
2- once at end of axon it is received by another neuron
3- crosses the synaptic gap
4- in the axon terminal are synaptic vesicles which contain neurotransmitters
5- when electrical impulses reaches synaptic vesicles they release their contents of neurotransmitters

Question 9

neurotransmitter role

Answer 9

carry signal across synaptic gap which binds to receptor on post-synaptic cell which becomes activated= this produces excitatory or inhibitory effects

Question 10

excitatory neurotransmitters

Answer 10

make post-synaptic cell more likely to fire

Question 11

inhibitory neurotransmitters

Answer 11

make post-synaptic cell less likely to fire

Question 12

example of excitatory neurotransmitters

Answer 12

noradrenaline