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action potential ext

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Total cards: 9•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (9)

#1
Front (Question)

Does the stimulus strength effect the size of the impulse?

Back (Answer)

no, size of impulse always the same regardless of size of stimulus (same action potential) however, stronger stimuluses depolarises more nerve fibres in a given time

#2
Front (Question)

myelinated fibres

Back (Answer)

nerves that are insulated from extracellular fluid except at nodes (myelin sheath)

#3
Front (Question)

ions in myelinated sheath

Back (Answer)

ions cannot flow between inside and outside so action potential cannot form

#4
Front (Question)

saltatory conduction

Back (Answer)

jumping from node to node

#5
Front (Question)

neuron to neuron

Back (Answer)

adjacent neurons dont touch

#6
Front (Question)

synapses

Back (Answer)

junction between branches of neurons

#7
Front (Question)

neuromuscular junction

Back (Answer)

gap between axon and muscle

#8
Front (Question)

journey from neutron to neuron

Back (Answer)

axon terminal -> presynaptic neuron ->synaptic cleft -> postsynaptic neuron

#9
Front (Question)

what neurotransmitters diffuse across membrane

Back (Answer)

acetylcholine, adrenaline, dopamine and histamine