Multiple Choice
Which of the following must happen first in the order events at a chemical synapse?
A) Neurotransmitter binds to receptors on the postsynaptic neuron.
B) Ion channels respond to the neurotransmitter and lead to a local potential, or possibly an action potential.
C) Calcium ion channels in the axon terminal open.
D) Calcium ions cause synaptic vesicles to release neurotransmitters into the synaptic cleft.
Correct Answer:
Verified
Correct Answer:
Verified
Q47: The most common type of neuron in
Q48: After acetylcholinesterase (AChE) acts, the presynaptic neuron:<br>A)
Q49: Ependymal cells:<br>A) serve as wandering phagocytes during
Q50: Summation that results from the cumulative effect
Q51: When a second EPSP arrives at a
Q53: What specific part of the neuron communicates
Q54: During the absolute refractory period, production of
Q55: Which of the following would NOT terminate
Q56: What is the most metabolically active part
Q57: What channels open or close in response