While Reviewing the Case File of an Older Client, a Nurse

Multiple Choice

While reviewing the case file of an older client, a nurse finds that the client's vitamin B₁₂ deficiency is untreated. Which change in the nervous system does the nurse suspect to cause gait instability and paresthesias in the client?

A) Degeneration of neurons
B) Lack of acetylcholine in the hippocampus lobe
C) Abnormalities in the basal ganglia of the midbrain
D) Demyelination of the dorsal columns of the spinal cord