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adrenaline |
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adrenaline (ədrĕn`əlĭn, –lēn): see epinephrine epinephrine (ĕp'ənĕf`rīn), hormone important to the body's metabolism, also known as adrenaline. ..... Click the link for more information. . epinephrineor adrenalineOne of two hormones (the other being norepinephrine) secreted by the adrenal glands, as well as at some nerve endings (see neuron), where they serve as neurotransmitters. They are similar chemically and have similar actions on the body. They increase the rate and force of heart contractions, increasing blood output and raising blood pressure. Epinephrine also stimulates breakdown of glycogen to glucose in the liver, raising blood glucose levels, and both hormones increase the level of circulating free fatty acids. All these actions ready the body for action in times of stress or danger, times requiring increased alertness or exertion. Epinephrine is used in medical situations including cardiac arrest, asthma, and acute allergic reaction (see allergy). See also dopamine. adrenaline [ə′dren·əl·ən] (biochemistry) How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| ? Mentioned in | ? References in periodicals archive | ||
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| (A) Well, that's always in the back of your head, but when
you're in the car, adrenaline takes over, and you're really
focusing on what's in front of you. Since adrenaline influences arousal and anxiety, the researchers
injected neuropeptide S into the brains of live mice to study its
behavioral effects. Deborah Miller was one of the few who avoided being hit, but
her reaction to the training session was the same as the rest - a jolt
of adrenaline. |
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