The function of acetylcholinesterase is to

A) open voltage-gated Na⁺ channels.
B) break down acetylcholine in the synapse.
C) produce an IPSP on the postsynaptic membrane.
D) metabolize norepinephrine.

Acetylcholinesterase

Enzyme found in the synaptic cleft that causes the breakdown of acetylcholine to acetic acid and choline, thus limiting the stimulatory effect of acetylcholine.

Acetylcholine

A neurotransmitter involved in many functions including muscle contraction and the transmission of nerve impulses in the central and peripheral nervous system.

Synapse

The junction between two neurons, where electrical or chemical signals are transmitted from one neuron to another.