The paresthesia that occurs in vitamin B₁₂ deficiency anemia is a result of which of these?
A)Reduction in acetylcholine receptors in the postsynaptic nerves
B)Myelin degeneration in the spinal cord
C)Destruction of myelin in peripheral nerves
D)Altered function of neurons in the parietal lobe

Question

Quizplus · Accepted Answer

Effects on the nervous system can occur if a vitamin B₁₂ deficiency causes anemia. Myelin degeneration may occur with the resultant loss of fibers in the spinal cord, producing paresthesia (numbness), gait disturbances, extreme weakness, spasticity, and reflex abnormalities. The paresthesia is not caused by reduction in acetylcholine receptors, destruction of myelin in peripheral nerves, or altered neuronal function in the parietal lobe.

The Paresthesia That Occurs in Vitamin B₁₂ Deficiency Anemia Is