What is another name for epinephrine?

Epinephrine is commonly known as adrenaline. This term reflects its role in the body as a hormone and neurotransmitter that is involved in the fight-or-flight response, increasing heart rate, and expanding air passages to improve oxygen delivery in stressful situations. The name "adrenaline" is derived from its secretion from the adrenal glands. This is the reason why adrenaline is the correct answer as it is widely recognized in both medical terminology and popular culture.

In contrast, serotonin, norepinephrine, and dopamine are all distinct neurotransmitters or hormones with different functions in the body. Serotonin is primarily associated with mood regulation, norepinephrine plays a role in attention and responding actions, and dopamine is linked to reward and pleasure systems. Each of these substances has unique effects that do not align with the primary roles of epinephrine or adrenaline. Thus, "adrenaline" accurately represents another name for epinephrine due to its shared identity and physiological functions.