neurones

Question 1

cell body function

Answer 1

contains nucleus and genetic info

Question 2

dendrites function

Answer 2

carry nervous impulses to cell body from neighbouring neurones

Question 3

axon function

Answer 3

carrys impulses (action potential) to ends of neurones

Question 4

mylein sheath function

Answer 4

fatty layer around axon speeds up transmission forcing action poentials to jump across gaps in mylein sheaths

Question 5

nodes of ranvier function

Answer 5

gaps between axons coated by mylein sheaths allowing faster transmission

Question 6

terminal buttons function

Answer 6

at the end of neurones allowing them to transfer information from one neurone to another across a synapse

Question 7

motor neurones- where are they, what do they do

Answer 7

control movement of muscles
found in CNS and PNS because they have long axons

Question 8

sensory neurones- where are they, what do they do

Answer 8

recieve stimuli from environment for processing
in PNS

Question 9

relay neurones, where are they, what do they do

Answer 9

make up 97% of neurones so are in brain and visual system as well as PNS and CNS
allow communication between sensory and motor neurones