7734 x 5465 px | 65,5 x 46,3 cm | 25,8 x 18,2 inches | 300dpi
Date de la prise de vue:
2008
Informations supplémentaires:
Epinephrine (also referred to as adrenaline) is a hormone and neurotransmitter increases the "fight or flight" response of the sympathetic division of the autonomic nervous system. It is released from the adrenal glands when danger threatens or in an emergency, hence an Adrenaline rush. Such triggers may be threatening, exciting, or environmental stressor conditions such as high noise levels, or bright light and high ambient temperature. The hormone boosts the supply of oxygen and glucose to the brain and muscles, while suppressing other non-emergency bodily processes (digestion in particular). It increases heart rate and stroke volume, dilates the pupils, and constricts arterioles in the skin and gastrointestinal tract while dilating arterioles in skeletal muscles. It elevates the blood sugar level by increasing catabolism of glycogen to glucose in the liver, and at the same time begins the breakdown of lipids in fat cells. Like some other stress hormones, epinephrine has a suppressive effect on the immune system.
