1. When an axon is at rest, negatively charged chloride ions are a. More concent
ID: 85677 • Letter: 1
Question
1. When an axon is at rest, negatively charged chloride ions are
a. More concentrated inside the axon than outside
b. Equally concentrated inside and outside the axon
c. More concentrated outside the axon than inside
d. Trapped inside small channels in the axon’s membrane
1. Which of the following is true about neurotransmitters?
a. Neurotransmitters can bind to any receptor site.
b. Neurotransmitters bind to receptor sites that are specific to that type of neurotransmitter.
c. Neurotransmitters are responsible for communication within one neuron.
d. Neurotransmission may be enhanced by reuptake of the neurotransmitter back into the axon terminal.
1. During the action potential, just after ________ ions enter the axon, ________ ions leave, restoring the original charge.
a. Sodium … Potassium
b. Potassium … Hydrogen
c. Potassium … Sodium
d. Hydrogen … Sodium
Explanation / Answer
ANSWER:
1) More concentrated outside the axon than inside.
2) Neurotransmitters bind to receptor sites that are specific to that type of neurotransmitter.
3) During the action potential, just after sodium ions enter the axon, potassium ions leave, restoring the original charge.
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