Chemical Synapse Labeling

Presynaptic Neuron

#1

Postsynaptic Neuron

#2

Postsynaptic Neuron

#3

Mitochondria

#4

Ca2 (Calcium)

#5

Synaptic Cleft

#6

Synaptic Vesicles

#7

Postsynaptic Neuron

#8

Enzymatic Degradation

#9

Diffusion Away from Synapse

#10

Reuptake

#11

Ion Movement

#12

Graded Potential

#13

Binding of neurotransmitter opens ion channels, resulting in graded potentials

#14

Neurotransmitter effects are terminated by reuptake through transport proteins, enzymatic degradation, or diffusion away from the synapse.

#15

Neurotransmitter diffuses across the synaptic cleft and binds to specific receptors on the postsynaptic membrane.

#16

Ca2+ entry causes synaptic vesicles to release neurotransmitter by exocytosis.

#17

Voltage-gated Ca2+ channels open and Ca2+ enters the axon

terminal.

#18

Action potential arrives at axon terminal.

#19