Question

What would you expect to happen if the acetylcholinesterase was poisoned (stopped)?

A.The pre-synaptic membrane should release more acetylcholine.
B.The muscle should undergo prolonged contractions.
C.Ca2+ conductance should increase in the presynaptic membrane.
D.The post-synaptic membrane should become impermeable.

Answer 1

If acetylcholinesterase is poisoned or stopped, it would result in prolonged muscle excitation and contraction.

Step-by-step explanation:

When acetylcholinesterase is poisoned or stopped, it is unable to degrade acetylcholine (ACh) in the synaptic cleft. As a result, ACh cannot rebind to receptors and reopen its channel. This leads to prolonged muscle excitation and contraction, causing continuous and uncontrolled muscle activity.