Catechol-O-methyltransferase is an enzyme that performs which of the following functions in the ANS?
A)Inactivates ACh in a synapse.
B)Activates ACh in a synapse.
C)Inactivates norepinephrine in a synapse.
D)Activates norepinephrine in a synapse.
E)Promotes uptake of norepinephrine back into the synaptic knob.

Question

Quizplus · Accepted Answer

Catechol-O-methyltransferase inactivates norepinephrine in a synapse by catalyzing its breakdown. This process helps to terminate the effects of norepinephrine and prevent prolonged activation of the sympathetic nervous system.

Catechol-O-Methyltransferase Is an Enzyme That Performs Which of the Following