Editing Adrenal glands (section)

== '''Blood supply''' ==

* Among the most     highly-perfused organs in the body (2L/kg/min of blood)
* Both glands receive blood     from three sources. Generally, all the arteries are small (<2mm) and     can be safely ligated with an energy device. They don't particularly enter     at the hilum. There can occasionally be a single larger artery, especially     from renal artery side.
** Superior adrenal artery from      the inferior phrenic artery
** (Small) middle adrenal      artery from juxtacoeliac aorta
** Inferior adrenal artery from      renal arteries (most prominent)
* Arteries arborise extensively     before entering the capsule and forming a subcapsular plexus. Blood flows     centripetally through capillaries in ZG and ZF before forming a deep     plexus in ZR. Then the cortisol-enriched blood moves into the medulla,     where cortisol catalyses the production of phenylethanolamine     N-methyltransferase, which converts noradrenaline to adrenaline.