GENERAL HISTOLOGY

Detailed explanation-1: -Epinephrine, also known as adrenaline, is both a neurotransmitter and a hormone. It plays an important role in your body’s “fight-or-flight” response. It’s also used as a medication to treat many life-threatening conditions.

Detailed explanation-2: -The word epinephrine derives from epi, meaning above, and nephros, the root word for kidney, because the gland sits atop the kidney. Epinephrine is also called adrenaline, derived from the name of its gland. For this reason, receptors for both epinephrine and norepinephrine are called adrenergic receptors.

Detailed explanation-3: -The adrenal medulla also makes adrenaline (also known as epinephrine).

Detailed explanation-4: -Parke, Davis & Co marketed the extract under the proprietary name Adrenalin, and so epinephrine became the generic name in America, on the incorrect assumption that Abel’s extract was the same as Takamine’s Adrenalin. In fact, Abel’s epinephrin was the inactive benzoylated derivative.

Detailed explanation-5: -Epinephrine (also called adrenaline), norepinephrine, and dopamine make up a small but important hormone family called catecholamines. Epinephrine and norepinephrine are the hormones behind your “fight-or-flight” response (also called the fight, flight, or freeze response).