Final answer:
The biogenic amine involved in immune responses and allergic reactions is histamine, not dopamine or norepinephrine. These amines are neurotransmitters with other functions, such as involvement in the nervous system and the fight-or-flight response.
Step-by-step explanation:
The biogenic amine used in immune responses and allergic reactions is histamine. It is not dopamine or norepinephrine, as the question may suggest. Histamine is involved in the local immune response and is responsible for the symptoms of allergies, such as itching, sneezing, and inflammation. It plays a crucial role in the body's response to foreign pathogens. Dopamine and norepinephrine, on the other hand, are biogenic amines that are mainly involved in signal transmission in the nervous system.
Biogenic amines like dopamine, norepinephrine, and epinephrine are derived from the amino acid tyrosine and have varied roles in the body. Dopamine is a neurotransmitter important for motor control and reward pathways, while norepinephrine and epinephrine (also known as noradrenaline and adrenaline) are important for the body's fight-or-flight response. However, these are not directly involved in immune responses and allergic reactions like histamine.