A patient is diagnosed with a health problem that alters the way impulses are conducted in the neurological system. When reviewing this information with the patient, which part of a neuron should the nurse teach carries impulses toward the cell body?
a. Axon
b. Dendrite
c. Schwann cell
d. Myelin sheath
ANS: B
A neuron may have one or many dendrites, which are extensions that carry impulses toward the cell body. A. A neuron has one axon that transmits impulses away from the cell body. C. In the peripheral nervous system, axons and dendrites are wrapped in specialized neuroglial cells called Schwann cells. The concentric layers of cell membrane of a Schwann cell's plasma membrane form the myelin sheath. D. Myelin is a phospholipid that electrically insulates neurons from one another.
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