Question 1

In general, a single neuron releases ____ neurotransmitter(s)  and can respond to ____ neurotransmitter(s) .

Accepted Answer

A)   one; many
B)   dozens of; only one
C)   several; only one
D)   several; manyE) A) and D)
F) B) and C)

Question 2

Nicotine directly stimulates receptors in the central nervous system and at nerve-muscle junctions. These nicotinic receptors are also receptors for which neurotransmitter?

Accepted Answer

A)   glutamate
B)   dopamine
C)   serotonin
D)   acetylcholineE) B) and D)
F) B) and C)

Question 3

Spatial summation refers to:

Accepted Answer

A)   multiple weak stimulations that occur in rapid succession.
B)   a decrease in responsiveness after repeated stimulation.
C)   multiple weak stimulations that occur at the same time.
D)   an increase in the strength of action potentials after repeated stimulation.E) A) and D)
F) All of the above

Question 4

Reuptake is the absorption of:

Accepted Answer

A)   neurotransmitters by the postsynaptic neuron.
B)   neurotransmitters by the presynaptic neuron.
C)   nutrients and waste products by glial cells.
D)   neurotransmitters by glial cells.E) C) and D)
F) B) and D)

Question 5

Why is the speed of conduction through a reflex arc slower than the speed of conduction of an action potential along an axon?

Accepted Answer

A)   Transmission between neurons at synapses is slower than along axons.
B)   The longer an axon, the slower its velocity.
C)   Interneurons have thicker axons than other neurons.
D)   There are greater amounts of myelin involved in the reflex arc.E) A) and D)
F) A) and B)

Exam 3: Synapses

Reuptake is the absorption of:

Correct Answer
verified

In general, a single neuron releases neurotransmitter(s) and can respond to neurotransmitter(s) .

Correct Answer
verified

Spatial summation refers to:

Correct Answer
verified

Nicotine directly stimulates receptors in the central nervous system and at nerve-muscle junctions. These nicotinic receptors are also receptors for which neurotransmitter?

Correct Answer
verified

Why is the speed of conduction through a reflex arc slower than the speed of conduction of an action potential along an axon?

Correct Answer
verified

Exam 3: Synapses

Reuptake is the absorption of:

Correct AnswerverifiedShow Answer

In general, a single neuron releases ____ neurotransmitter(s) and can respond to ____ neurotransmitter(s) .

Correct AnswerverifiedShow Answer

Spatial summation refers to:

Correct AnswerverifiedShow Answer

Nicotine directly stimulates receptors in the central nervous system and at nerve-muscle junctions. These nicotinic receptors are also receptors for which neurotransmitter?

Correct AnswerverifiedShow Answer

Why is the speed of conduction through a reflex arc slower than the speed of conduction of an action potential along an axon?

Correct AnswerverifiedShow Answer

Correct Answer
verified

In general, a single neuron releases neurotransmitter(s) and can respond to neurotransmitter(s) .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified