词汇 | adrenaline |
释义 | adrenaline noun[ U ] us/əˈdren·əl·ən, -ˌin/ biology a hormone (= chemical substance) produced by the body when a person is frightened, angry, or excited, which makes the heart beat faster and prepares the body to react to danger Examples of adrenalineadrenaline The results obtained using adrenergic agonists and antagonists suggest that the effect of adrenaline would be due to an interaction with 2-receptors. Hence, they would "burn out" on a task earlier than other folk and would need a greater infusion of adrenaline to fuel the system. For those who enjoy the occasional frisson of mindnumbing fear, the ultimate adrenaline rush is a mountain hurtling from the sky. Additionally, in males only, age is negatively associated with adrenaline excretion rate, whereas in females there is a weak positive association. It is only with adrenaline that a dosage is set out. In severe cases, anaphylaxis with angioedema, respiratory compromise and hypotension can prove fatal without the prompt administration of adrenaline. As a last resort, he was given adrenaline, injected directly into his heart. Experiments using adrenergic agonists and antagonists allowed us to determine that the metabolic effect of adrenaline is caused by interaction with 2-receptors. The exceptions to the switch are adrenaline and noradrenaline, where manufacturers will be encouraged to use both names on product packaging and literature. A normal cardiac rhythm and output was established after administration of adrenaline via an endotracheal tube. However, pretreatment with adrenaline caused a significant inhibition of progesterone-induced meiotic resumption while, with noradrenaline, inhibition was noticeably lower. However, pretreatment of the follicles with adrenaline resulted in a significant inhibition of progesteroneinduced nuclear maturation while, with noradrenaline, this inhibition was markedly lower. Challenge or risk, something to literally get their adrenaline pumping, can be key to keeping their attention and to eliciting optimum performance. The present results concerning the effect of adrenaline on nuclear maturation would support this mechanism of action. The use of adrenaline (epinephrine), on the other hand, induced a metabolic change which made oocytes cytoplasmically mature. See all examples of adrenaline These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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