Neurones

What are the 3 types of neurones

Sensory

Relay

Motor

What does a sensory neurone do

Carries info from peripheral NS to CNS

What does relay neurone do

Carries electrical impulse from CNS to Motor neurone

What does the motor neurone do

Carries electrical impulse from CNS to effector

What are the 4 parts of a sensory neuron

My line sheith

Cell body

Axon

Axon terminal

What are the 4 parts of a relay neurone

Dendrite

Cell body

Axon

Acon terminal

What are the 5 parts of a motor neurone

Cell body

Dendrite

Axon

Mylien Sheath

Axon terminal

What is a dendrite

At the end of neurones and receives signals

What is a cell body

Control centre of a neurone

What is a mylien sheath

Insulating layer around the axon

What does an axon do

Take electrical impulse away from cell body

What does an axon terminal do

Used to make synaptic contact with other neurons or effector cells

What is an excitatory neurotransmitter

Makes the post synaptic receptor more likely to fire off a neurotransmitter

What is a inibitatory neurotransmitter

Hinders the neurones likely of firing off a electrical impulse

What is the process of synaptic transmission

Electrical impulse travels down the pre synaptic neurone axon terminal until it reaches the vesicles

The synaptic vesicles empty the neurotransmitter into the synaptic gap

Where it diffuses across binding to the specialised receptor cells

Then the action potential travels up the post synaptic neurones axon