Curare Is a Poison Used by South American Indians

Multiple Choice

Curare is a poison used by South American Indians. It is known to bind to ACh receptors preventing the binding of ACh. What effect would it have on muscle function?

A) The muscle fibers would contract uncontrollably and continually.
B) The muscle fibers would not contract because the Na⁺ channels which cause depolarization of the muscle fiber membrane are never signaled to open.
C) The pre-synaptic release of ACh would be inhibited, therefore the muscle would not contract.
D) The action of acetylcholinesterase would be inhibited causing increased contraction.
E) Both the muscle fibers would contract uncontrollably and continually and the action of acetylcholinesterase would be inhibited causing increased contraction would occur.