In amyotrophies,the paresis and paralysis are segmental.Why is the segmental character of weakness difficult to recognize?
A) Because upper motor neurons are involved
B) Because posterior horn cell injury is involved
C) Because each muscle is supplied by two or more nerve roots
D) Because the patient is unable to feel the involved muscles

Question

Quizplus · Accepted Answer

The segmental character of weakness in amyotrophies is difficult to recognize because each muscle is supplied by two or more nerve roots. As a result, weakness affecting one nerve root may be compensated for by the innervation from adjacent roots, making it difficult to detect isolated weakness in a specific segment or muscle group.

In Amyotrophies,the Paresis and Paralysis Are Segmental