This one's called norepinephrine. And it is always norepinephrine that's released from postganglionic fibers in the sympathetic nervous system.

这个叫做肾上腺素。交感神经系统节后纤维释放永远是肾上腺素。

The body compensates by increasing its number of noradrenaline receptors so it can detect much smaller amounts of noradrenaline.

为了对抗这种变化，人体会增加肾上腺素受体数量，以便能侦测浓度 肾上腺素。

This is because the nicotine in cigarettes released epinephrine and norepinephrine, which increase your heart rate and narrowed blood vessels.

这是因为烟草中尼古丁会释放肾上腺素和肾上腺素。

Your adrenal gland releases the stress hormones cortisol, epinephrine, also known as adrenaline, and norepinephrine.

你肾上腺会释放压力荷尔蒙皮质醇，肾上腺素，以及肾上腺素。

Higher levels of norepinephrine also apparently causes a tendency towards anger and aggression.

高水平肾上腺素能显著导致愤怒和攻击倾向。

When you fall asleep though, your norepinephrine levels drop.

当你入睡时，肾上腺素水平会下降。

Norepinephrine is another neurotransmitter involved in attention and arousal.

肾上腺素是与注意和觉醒相关另一种神经递质。

Norepinephrine is always present at some level while you're awake.

你在清醒时，肾上腺素总保持在一定程度上。

We will have a huge increase by 2.5-fold of noradrenaline within a few minutes.

我们会在几分钟内大量增加 2.5 倍肾上腺素。

It will immediately increase noradrenaline in the body to activate our fight and flight system.

它会立即增加体内肾上腺素，以激活我们战斗和逃跑系统。

Noradrenaline levels can increase within a day of ceasing opioid use.

肾上腺素水平能在停止服用阿片类药物一天之内增加。

Whether you're awake or asleep, norepinephrine helps you remember things.

无论清醒状态下还是睡着了，肾上腺素都能帮助人们记住各种事情。

The sympathetic neurons releases norepinephrine, also called noradrenaline, and the cells of the adrenal medulla release norepinephrine and epinephrine, also called adrenaline.

交感神经元释放肾上腺素，而肾上腺髓质细胞释放肾上腺素与肾上腺素。

Noradrenaline is another component in making you anxious.

肾上腺素是另-种会使你感焦虑成分。

Yeah, I said the adrenal glands release norepinephrine as a hormone.

是，我说肾上腺释放肾上腺素作为荷尔蒙。

First, it optimizes the levels of neurotransmitters like serotonin, norepinephrine, and dopamine.

首先，它能优化神经递质水平，如血清素、肾上腺素和多巴胺。

Some research has found that there is a loss of noradrenaline neurons in the brain in Parkinson's patients.

有研究发现，帕金森患者脑内缺少“肾上腺素神经元”。

And Noradrenaline is also the hormone that kickstarts the fight or flight response.

肾上腺素也是启动战斗或逃跑反应激素。

A therapeutic dose decreases noradrenaline enough to cause side effects like constipation.

治疗剂量阿片类药物会导致肾上腺素水平减少，从而引发一些副作用，比如便秘。

And disturbances in norepinephrine transmission is thought to also be a key component in depression.

肾上腺素传递紊乱也被认为是抑郁症关键诱因。