Which of the following is the correct chronological order for presynaptic events?
A) calcium ion influx occurs, action potential reaches the axon terminal, vesicle fuses with membrane, neurotransmitter diffusion occurs
B) action potential reaches the axon terminal, calcium ion channels open, exocytosis occurs, neurotransmitter diffusion occurs
C) exocytosis occurs, calcium ion influx occurs, action potential reaches the axon terminal, membrane depolarization occurs
D) action potential reaches the axon terminal, calcium ion channels open, neurotransmitter diffusion occurs, exocytosis occurs
Correct Answer:
Verified
Q20: Synaptic structure was first viewed in the
Q21: For an action potential to be elicited:
A)one
Q22: When a neurotransmitter diffuses across the synaptic
Q23: _ is the inactivation of a neurotransmitter
Q24: Synaptic vesicles release neurotransmitters via:
A)endocytosis.
B)pinocytosis.
C)exocytosis.
D)phagocytosis.
Q26: Protein molecules that move substances across a
Q27: How is a neurotransmitter removed from the
Q28: Ultimately Ca2+ serves to aid neural transmission
Q29: Precursor chemicals that form the building blocks
Q30: _ is the process of neurotransmitter deactivation
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