Adrenaline of epinephrine can be seen in autonomic neuropathy or following adrenalectomy. Failure of the adrenal cortex, as with Addisons disease, can suppress epinephrine secretion as the activity of the synthesing enzyme, phenylethanolamine-"N"-methyltransferase, depends on the high concentration of cortisol that drains from the cortex to the medulla. In 1901, Jokichi Takamine patented a purified extract from the adrenal glands, and called it "adrenalin" (from the Latin for "on top of the kidneys" ("ad" and "renal"), which was trademarked by Parke, Davis & Co in the US. The British Approved Name and European Pharmacopoeia term for this drug is hence "adrenaline".
Segmentation in the human nervous system into a chemical signal. Segmentation is a crucial patterning process that is involved in the development of both the central nervous system and peripheral nervous system. In the central nervous system, segmentation is involved in the patterning of the neuronal population. Added to that, segmentation guides the developing axons and contribute to the development of the peripheral nervous system. In bilateral animals, the fundamental body plan involves the left and right sides as mirror images to each other with a hollow tube of gut cavity from mouth to anus along with a nerve cord with a structure named ganglion for