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".
Development of the nervous system vivo", it is suggested that muscle fibres select the strongest neuron through a retrograde signal. Contrary to popular belief, neurogenesis also occurs in specific parts of the adult brain. Development of the nervous system Development of the nervous system refers to the processes that generate, shape, and reshape the nervous system of animals, from the earliest stages of embryogenesis to adulthood. The field of neural development draws on both neuroscience and developmental biology to describe and provide insight into the cellular and molecular mechanisms by which complex nervous systems develop, from the nematode and fruit fly to mammals. Defects in