Question

Which neurotransmitters are considered catecholamines? Check all that apply.

A) dopamine
B) oepinephrine
C) acetylcholine
D) epinephrine

Answer 1

The catecholamine neurotransmitters include dopamine, norepinephrine, and epinephrine. Acetylcholine is not a catecholamine. Catecholamines are derived from tyrosine and are involved in stress responses and the fight-or-flight mechanism.

Step-by-step explanation:

The neurotransmitters that are considered catecholamines include:

• Dopamine (A)
• Norepinephrine (B)
• Epinephrine (D)

Acetylcholine (C) is not considered a catecholamine. Catecholamines are a group of neurotransmitters made from the amino acid tyrosine and include dopamine, norepinephrine, and epinephrine. These neurotransmitters play roles in the body's response to stress and are involved in the fight-or-flight response when secreted into the bloodstream by the adrenal medulla. Interestingly, while norepinephrine and epinephrine can act as hormones when released into the bloodstream, they can also function as neurotransmitters when released at synapses in the nervous system.