WorksheetsSynapses
Total questions: 15
Worksheet time: 3mins
Presynaptic membrane
Cell body
axon terminal
dendrite
dendron
Another name for a nerve impulse is
Electrical signal
Action potential
Neurotransmitter
Axon terminal
Which letter represents a neurotransmitter?
(a)
Which letter represents a vesicle?
(a)
Which letter represents a neurotransmitter receptor?
(a)
Which letter represents a voltage-gated calcium channel?
(a)
Which number represents the post-synaptic membrane?
(a)
Which number represents the synaptic cleft?
(a)
What happens in an axon terminal when an action potential arrives at the presynaptic membrane?
sodium ions diffuse in
sodium ions diffuse out
calcium ions diffuse in
calcium ions diffuse out
What happens when calcium ions diffuse into an axon terminal?
vesicles release neurotransmitter by exocytosis
voltage-gated sodium channels open
voltage-gated sodium channels close
neurotransmitter is pumped from the post-synaptic membrane
What causes sodium ion channels on the postsynaptic membrane to open?
arrival of an action potential at the channel
enzymatic digestion of the neurotransmitter bound to the channel
binding of the neurotransmitter to the channel itself
binding of calcium ions to the channel itself
