Site MapHelpFeedbackMultiple Choice Quiz
Multiple Choice Quiz
(See related pages)

Please answer all questions

1
Branched nerve fibers that convey local potential changes toward the cell body of a neuron are called _____________.
A)axons
B)dendrites
C)axon collaterals
D)axon terminals
2
Myelin sheaths on the outsides of many axons in the peripheral nervous system are contributed by ______________.
A)the axon itself
B)secretory vesicles
C)Schwann cells
D)the cell bodies of the neuron
3
A neuron with many nerve fibers arising from its cell body and that carries impulses away from the brain would be classified as __________________.
A)multipolar
B)bipolar
C)unipolar and sensory
D)multipolar and motor
4
Which types of neurons are likely to increase muscular activities?
A)accelerator neurons
B)inhibitory neurons
C)bipolar neurons
D)sensory neurons
5
The _______________ are the types of neuroglial cells that provide myelin in the central nervous system.
A)astrocytes
B)oligodendrocytes
C)microglia
D)ependyma
6
Which type of neuroglial cells help regulate the composition of cerebrospinal fluid?
A)astrocytes
B)oligodendrocytes
C)microglia
D)ependyma
7
Cut neurons in the PNS possess limited capabilities for regeneration. The type of neuroglial cell that aids regeneration by forming a regeneration tube to help reestablish the former connection is the _______________.
A)Schwann cell
B)astrocyte
C)microglial cell
D)ependymal cell
8
At resting potential, the ion distribution inside and outside of a neuron is such that __________ ions are most abundant on the outside of the cell, while __________ ions are most abundant on the inside of the cell.
A)potassium; sodium
B)sodium; potassium
C)calcium; phosphate
D)sulfate; potassium
9
In response to a stimulus, if the membrane potential becomes more negative than the resting potential, we say the membrane is _______________.
A)hyperpolarized
B)depolarized
C)unpolarized
D)polarized
10
When a neuron reaches action potential, it depolarizes and repolarizes in an amount of time on the order of ________________.
A)seconds
B)milliseconds
C)microseconds
D)nanoseconds
11
Select the incorrect statement about nerve impulse conduction.
A)Saltatory conduction involves Schwann cells and occurs at greater speed than on unmyelinated fibers.
B)Nerve impulses occur in an all-or-none manner.
C)The neuron cannot be stimulated during the absolute refractory period.
D)The strength of impulses carried along a single axon can vary with the strength of the initiating stimulus.
12
Excessive sleeping is most likely due to the presence of too much of which neurotransmitter?
A)GABA
B)norepinephrine
C)serotonin
D)dopamine
13
Myasthenia gravis reflects a deficiency in communication by _______________ because receptors for this neurotransmitter have been destroyed.
A)acetylcholine
B)norepinephrine
C)GABA
D)dopamine
14
The levels of which neurotransmitter are affected by the mood-elevator, cocaine?
A)serotonin
B)GABA
C)norepinephrine
D)acetylcholine
15
Fibers that originate from different parts of the nervous system and lead to the same neuron are exhibiting _____________.
A)facilitation
B)convergence
C)divergence
D)neuromodulation
16
Which term does not belong with the others?
A)brain
B)spinal cord
C)CNS
D)spinal nerve
17
Which items should not be grouped together?
A)spinal nerve
B)cranial nerve
C)spinal cord
D)PNS
18
The cells that conduct messages towards the brain are the_______________.
A)motor neurons
B)sensory neurons
C)interneurons
D)neuroglia
19
Nerves impulses always travel to the brain through _____ fibers.
A)neuron
B)dendrite
C)nerve
D)axon
20
The myelin sheath around a neuron in the PNS is actually produced by the _______________.
A)neuron
B)axon
C)dendrite
D)Schwann cell
21
Which of these cells does not belong with the others?
A)microglia
B)neuron
C)astrocyte
D)oligodendrocyte
22
The _____ cells are capable of removing a blood clot from the brain.
A)astrocyte
B)oligodendrocyte
C)microglia
D)ependymal
23
Which of these is true when a neuron is at rest?
A)the outside is positive
B)the outside is negative
C)there is no voltage
D)the inside is positive
24
The most common neurotransmitter in the body is _____.
A)serotonin
B)dopamine
C)acetylcholine
D)norepinephrine







Hole's Human A&P 10eOnline Learning Center

Home > Chapter 10 > Multiple Choice Quiz