Question

Select all that are true of LMN (lower motor neuron) damage It can be caused by specific diseases such as Guillain-Barre It will cause both muscle atrophy and muscle weakness It will cause cause clonus There can be no recovery

Answer 1

A lesion on the lower motor neuron (LMN) can result in paralysis or partial loss of voluntary muscle control known as paresis. Guillain-Barre syndrome, for example, can cause LMN damage. LMN damage can cause muscle weakness and muscle atrophy, but not clonus. Recovery is possible depending on the injury and treatment.

Step-by-step explanation:

A lesion on the lower motor neuron (LMN) would result in paralysis, or at least partial loss of voluntary muscle control, which is known as paresis. The paralysis observed in LMN diseases is referred to as flaccid paralysis, referring to a complete or partial loss of muscle tone, in contrast to the loss of control in upper motor neuron (UMN) lesions in which tone is retained and spasticity is exhibited.

Guillain-Barre syndrome, for example, is a specific disease that can cause LMN damage. It is an autoimmune disease triggered by bacterial and viral infections that destroys the myelin sheaths around neurons, resulting in flaccid paralysis.

LMN damage can cause muscle weakness and muscle atrophy, but it does not cause clonus, which is a rhythmic muscle contraction and relaxation. As for recovery, it depends on the specific injury and treatment, but it is possible for recovery to occur in some cases.