Amyotrophic lateral sclerosis (ALS) disrupts muscle contraction by
A) binding actin.
B) blocking myofibril.
C) killing motor neurons.
D) weakening myofilaments.
E) none of these.

Question

Quizplus · Accepted Answer

ALS kills motor neurons, which are responsible for transmitting signals from the brain to muscles. Without these signals, muscles gradually weaken and waste away, leading to difficulty in movement, speaking, swallowing, and breathing.

Amyotrophic Lateral Sclerosis (ALS) Disrupts Muscle Contraction by