Seven Steps of a Chemical Synapse
Step 7
impulse propgation
Step 1
nerve impulse arrive at end bulb
Step 4
neurotransmitter released into synaptic cleft and diffuse
Step 3
triggers exocytosis of synaptic vesicles with neurotransmitter
When a depolarizing graded potential makes the membrane depolarize to threshold..
voltage-gated sodium channels open rapidly
____ are examples of effectors of nervous system (clicker)
-glands
Step 5
bind to receptors on postsynaptic neuron and opens ligand-gated channels
Step 6
creates postsynaptic potential, which generates action potential if threshold
Step 2
depolarization opens voltage-gated calcium channels, calcium flows into axon terminal