Botulism toxin blocks the release of acetylcholine from the motor neuron.What effect does this have on muscle contraction?
A)Muscle contractions are strengthened.
B)There isn't enough information in the question to predict.
C)Muscle contractions are weakened or absent.
D)More calcium would be released from the sarcoplasmic reticulum.

Question

Quizplus · Accepted Answer

Acetylcholine is the neurotransmitter responsible for initiating muscle contraction by binding to receptors on the muscle cell membrane. Without it, the muscle cannot contract and will be weakened or unable to contract at all. Botulism toxin blocks the release of acetylcholine from motor neurons, leading to the symptoms of muscle weakness or paralysis. Option A is incorrect because muscle contractions cannot be strengthened without the presence of acetylcholine. Option B is incorrect because the question provides enough information to make a prediction. Option D is unrelated to the question and is therefore incorrect.

Botulism Toxin Blocks the Release of Acetylcholine from the Motor