Action potentials at a chemical synapse
A) travel from presynaptic terminal to postsynaptic membrane.
B) travel from postsynaptic membrane to presynaptic terminal.
C) travel back and forth from presynaptic terminal to postsynaptic membrane.
D) travel from presynaptic terminal to presynaptic membrane.
E) stop at the presynaptic terminal and are regenerated on the postsynaptic membrane.
Correct Answer:
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Q69: An action potential
A) occurs when the local
Q76: A series of local potentials causes the
Q77: A stimulus either causes an action potential
Q77: The speed of an action potential depends
Q79: In some cells,an afterpotential occurs because
A)the sodium
Q83: Gap junctions are functional _ synapses.
A)chemical
B)electrical
C)potential
D)intracellular
E)neuromuscular
Q84: Neurotransmitters are released from the
A)epineurium.
B)synaptic cleft.
C)presynaptic terminal.
D)postsynaptic
Q90: Receptor molecules
A) are nonspecific.
B) are always lipids.
C)
Q99: Rapid removal or destruction of neurotransmitter in
Q100: Chemical synapses are characterized by
A) the release
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