Reflexes + Electrical Impulses at Synapses Flashcards

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1
Q

What are reflex actions

A

actions which don’t use the conscious part of the brain

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1
Q

what is the reflex arc

A

stimulus –> receptor –> coordinator–> effector –> response

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2
Q

Where are synapses located

A

between neurones

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3
Q

What is the 1st stage of an electrical impulse travelling across a synapse

A

the electrical impulse moves down the neurone/axon

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4
Q

What happens in the synapse vesicles when the electrical impulse arrives (2nd step of process)

A

it triggers nerve endings to release chemical called NEUROTRANSMITTERS from the synapse vesicles

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5
Q

What happens to the neurotransmitters in the 3rd step of the process

A

neurotransmitters diffuse across the synapse and bind with receptor molecules on membrane of the next neurone

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6
Q

What happens once neurotransmitters bind with receptors on the next neurones membrane - What is the 4th step?

A

new electrical impulse is created
neurotransmitters stimulate 2nd neurone to transmit electrical impulse

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