Which physiological change in the brain is the reason the nurse allows more time for answering questions with older adults?
a. Increased secretion of cholinesterase
b. Decreased secretion of neurotransmitters
c. Loss of spinal cord and brainstem neurons
d. Atrophy of dendrites in the cerebral cortex
D
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A Incorrect. The secretion of cholinesterase, the enzyme that inactivates acetyl-choline in the synapse, does not increase with aging.
B Incorrect. Changes in the transmission of neurotransmitters are associated with the atrophy of dendrites.
C Incorrect. The spinal cord and the cerebral cortex lose neurons with age, the ce-rebral cortex more than the spinal cord.
D Correct. Dendrites are the receiving end of neurons (receiving electrochemical signals) and the branched ends extending from the cell body. The atrophy of dendrites contributes to slower thought processes with aging because the syn-apses are impaired; this changes the transmission of neurotransmitters that are vital in the transmission of an electrical impulse from neuron to neuron.
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What will be an ideal response?