what is the body natural version of morphine
Endorphins Endorphins (contracted from "endogenous morphine"[note 1]) are endogenous opioid neuropeptides and peptide hormones in humans and other animals. They are produced by the central nervous system and the pituitary gland. The term "endorphins" implies a pharmacological activity (analogous to the activity of the corticosteroid category of biochemicals) as opposed to a specific chemical formulation. It consists of two parts: endo- and -orphin; these are short forms of the words endogenous and morphine, intended to mean "a morphine-like substance originating from within the body".[2] The class of endorphins includes three compounds – α-endorphin, β-endorphin, and γ-endorphin – which preferentially bind to μ-opioid receptors.[3] The principal function of endorphins is to inhibit the transmission of pain signals; they may also produce a feeling of euphoria very similar to that produced by other opioids.[4]
Adrenaline Adrenaline, also known as adrenalin or epinephrine, is a hormone, neurotransmitter, and medication.[3][4] Epinephrine is normally produced by both the adrenal glands and certain neurons.[3] It plays an important role in the fight-or-flight response by increasing blood flow to muscles, output of the heart, pupil dilation response, and blood sugar level.[5][6] It does this by binding to alpha and beta receptors.[6] It is found in many animals and some single cell organisms.[7][8] Napoleon Cybulski first isolated epinephrine in 1895.[9]