Question

Choose the CORRECT lower motor neuron syndrome:

A. Areflexia: loss of movement
B. Paralysis: loss of reflexes
C. Areflexia: muscle weakness
D. Paresis: loss of movement
E. Paresis: muscle weakness

Answer 1

The correct lower motor neuron syndrome is 'Areflexia: muscle weakness', indicating flaccid paralysis and reduced or absent reflexes associated with LMN lesions.

Step-by-step explanation:

The correct answer to the lower motor neuron syndrome is C. Areflexia: muscle weakness. A lesion on the lower motor neuron (LMN) can lead to paralysis (complete loss of voluntary muscle control) or paresis (partial loss of voluntary muscle control). In LMN diseases, the paralysis is classified as flaccid paralysis, which is a complete or partial loss of muscle tone. Flaccid paralysis contrasts with the loss of control in upper motor neuron (UMN) lesions where muscle tone is retained, and spasticity is common. Other signs of an LMN lesion include fibrillation, fasciculation, and the absence or reduction of reflexes due to muscle fiber denervation.