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Pre-Test
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1
Which of the following structures is a component of a vertebrate peripheral nervous system?
A)The spinal cord
B)Neurons that innervate muscle cells
C)The brain
D)The spinal cord and the brain
E)The spinal cord, neurons that innervate muscle cells, and the brain
2
Which of the following statements about nerve impulses is correct?
A)The voltage of a cell that is sending nerve impulses is referred to as the resting potential.
B)A nerve impulse is a change in the amount of electric charge across a cell's plasma membrane.
C)A neuron is an electrically depolarized cell.
D)The difference between the charges on the inside and outside of a cell is referred to as the cell's potential.
E)All of the statements about nerve impulses are correct.
3
Which of the following types of channels are responsible for graded and action potentials?
A)Ligand-gated channels
B)Voltage-gated channels
C)Mechanosensitive channels
D)Ligand-gated channels and Voltage-gated channels
E)Ligand-gated channels, voltage-gated channelsand mechanosensitive channels
4
Which one of the following statements about the disruption of normal neurotransmission is incorrect?
A)Over 100 neurological disorders have been described in humans alone.
B)The most common mood disorder is bipolar disorder.
C)Zoloft prevents the reuptake of serotonin into the presynaptic terminal after it has been released.
D)When a person's body attacks and destroys the myelin on axons, multiple sclerosis can develop.
E)All of the statements about the disruption of normal neurotransmission are correct.
5
Which of the following is not a component of a neuron?
A)Axon
B)Soma
C)Cell body
D)Dendrite
E)All of the choices are components of a neuron





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