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Nervous Tissue
Test Description: Nervous Tissue
Instructions: Answer all questions to get your test result.
1) These ion channels respond primarily to neurotransmitters (chemicals).
A
Voltage.
B
Ligand.
C
All of these
D
Leakage.
2) The resting membrane potential of a neuron is __________ and the action potential “thresh-hold” is _______ .
A
–55, -70
B
–70, -55
C
–55, +30
D
None of these
3) During the depolarization phase of an action potential, which of the following is the primary activity?
A
Sodium ions are flowing out of the cell.
B
Potassium ions are flowing into the cell.
C
Potassium ions are flowing out of the cell.
D
Sodium ions are flowing into the cell.
4) Of the characteristics listed, the factor most affecting the rate and speed of impulse conduction is:
A
presence or absence of a myelin sheath (insulation).
B
site of initial stimulation.
C
number of neuroglia associated with it.
D
length of the axon.
5) A neuron that has its primary function of connecting other neurons is:
A
glial cell
B
association neuron
C
efferent neuron
D
afferent neuron
6) This structure of the neuron carries impulses away from the cell body.
A
Dendrite
B
Neurolemma
C
Axon
D
Hillock
7) Schwann cells are found in the CNS.
A
True
B
False
8) Ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid are:
A
Oligodendrocytes
B
Ependymal cells
C
Schwann cells
D
Microglia
9) continuous is faster than saltatory nervous conduction
A
False
B
True
10) The part of the nervous system that is voluntary and conduct impulses from the CNS to the skeletal muscles is the:
A
sensory nervous system
B
somatic nervous system
C
enteric nervous system.
D
autonomic nervous system.
*select an answer for all questions
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