Which is not a type of neuronal pool?
A. Converging
B. Triangular-pre-discharge
C. Diverging
D. Parallel-after-discharge
E. Reverberating
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Question 2) There are two types of synapses, based on mode of communication. What are they?
A. Mechanical and chemical
B. Magnetic and physical
C. Physical and chemical
D. Chemical and electrical
E. Mechanical and electrical
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Question 3) Choose the answer that correctly lists, in chronological order, the events involved in synaptic transmission.
a: A nerve impulse reaches the synaptic knob.
b: Neurotransmitter molecules diffuse across the synaptic cleft.
c: A nerve impulse begins in the postsynaptic cell.
d: Neurotransmitter molecules bind to receptors in the postsynaptic cell.
e: A voltage change occurs in the postsynaptic cell.
A. a, c, b, d, e
B. a, b, e, d, c
C. c, b, d, e, a
D. a, b, d, e, c
E. c, a, b, d, e
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Question 4) ___________ is the release of chemicals that locally regulate the response of neurons to neurotransmitters.
Fill in the blank with correct word.
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Question 5) When a neuromodulator slows the reuptake of a neurotransmitter or causes expression of an increased number of receptors on postsynaptic neurons, the effect is called
A. facilitation.
B. temporal summation.
C. spatial summation.
D. presynaptic potentiation.
E. recruitment.
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Question 6) As an axon approaches the cell onto which it will terminate, it generally branches repeatedly into several
A. teloaxons.
B. dendrites.
C. collateral axons.
D. telodendria.
E. neurolemmocytes.
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Question 7) The main way acetylcholine is cleared from a synapse is by
A. degradation by an enzyme.
B. uptake by the postsynaptic cell.
C. reuptake by the presynaptic cell.
D. being engulfed by a supporting glial cell.
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Question 8) One of the ways in which neurotransmitter is removed from the synaptic cleft is
A. endocytosis by the postsynaptic cell.
B. reuptake by the presynaptic cell.
C. phagocytosis by a macrophage.
D. dendritic lassos.
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Question 9) What effect would an acetylcholinesterase inhibitor have on an acetylcholine synapse? Describe how you think it would influence muscle function.
What effect do serotonin reuptake inhibitors have on serotonin synapses? Describe how you think they influence mood.
What will be an ideal response?
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Question 10) In order to trigger the release of neurotransmitter from a neuron terminal, calcium ions
A. exit the synaptic knob through diffusion.
B. bind to proteins on the surface of synaptic vesicles.
C. penetrate the synaptic vesicles and bind to molecules of neurotransmitter.
D. bind to ion channels on the neuron membrane and cause them to open for the transmitter.
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