Within the peripheral nervous system,the myelin sheath is formed by
A) Schwann cells.
B) oligodendrocytes.
C) microglial cells.
D) astrocytes.
Correct Answer:
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Q13: The motor division is also called the
Q14: Which cell type sends electrical signals?
A)Neuron
B)Neuroglial cell
C)Neurons
Q15: A sensory neuron carries impulses
A)to muscles and
Q16: What are nodes of Ranvier?
A)Myelin sheaths around
Q17: A bundle of parallel axons in the
Q19: Which of the following contains the nucleus?
A)Axon
B)Dendrite
C)Cell
Q20: An interneuron carries impulses
A)to muscles and glands.
B)to
Q21: A very strong stimulus produces a larger
Q22: What system keeps the neuron at resting
Q23: An action potential begins with a
A)stimulus.
B)depolarization.
C)repolarization.
D)refractory period.
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