Curare is a poison that binds to acetycholine receptors at the motor end plate. What is the result of curare poisoning?
A) Increased acetylcholine production
B) Lack of neurotransmitter release by the motor neuron
C) Inability of the muscle fiber to respond to nervous stimulation
D) Rapid breakdown of acetylcholine by acetylcholinesterase

Question

Quizplus · Accepted Answer

Curare competes with acetylcholine for binding sites on the acetylcholine receptors at the neuromuscular junction, preventing acetylcholine from binding. This blocks the transmission of nerve impulses to the muscles, leading to paralysis by preventing muscle contraction, which is the inability of the muscle fiber to respond to nervous stimulation.

Curare Is a Poison That Binds to Acetycholine Receptors at the Motor