That is where your sympathetic system's more mellow half-brother, the parasympathetic system comes in.

这就是你的交感统更成熟的同父异母兄弟——副交感统的用武之地。

When this happens, our sympathetic nervous system triggers a fight-or-flight response.

当这种情况发生时，们的交感统会触发战斗或逃跑应。

The parasympathetic is coming in to just tamp down the threat response a little bit.

副交感的作用只是稍微抑制应。

The increased SNS activity seemed to be the cause for the high metabolic rate.

增加的交感统的活动似乎是高代谢率的原因。

We'll start that next week, with a white-knuckle ride through your sympathetic nervous system.

下周们将开始先体验一下你交感统的紧张刺激。

It's part of our sympathetic nervous system, so we'll breathe.

它是们交感统的一部分， 所以们会呼吸。

This happens thanks to the parasympathetic division of the autonomic nervous system.

这要归功于自主统的副交感分支。

How would SNS activation manifest itself in response to over-eating?

交感统的激活会如何响应过量进食而表现出来？

If the heat generated is intense enough, the body's parasympathetic nervous system is triggered, which creates a relaxation response.

如果产生的热量足够强烈，身体的副交感统就会被触发，从而产生放松应。

It stimulates your parasympathetic nervous system, the half of your nervous system responsible for activities like resting and digesting.

它会刺激您的副交感统，这是负责休息和消化等活动的统的一半。

Once the rectum is filled and stretched, signals travel to parasympathetic neurons in the spinal cord, initiating the defecation reflex.

当直肠被粪便填满并受到牵拉时，就会向脊髓内的副交感元发出信号，启动排便射。

Damaged parasympathetic nerve fibers can't release acetylcholine, so there's less nitric oxide synthase activation, and less nitric oxide is produced.

受损的副交感纤维不能释放乙酰胆碱，因此被激活的一氧化氮合酶较少，产生的一氧化氮也较少。

Well, the first half of your breath, the inhale, influences your sympathetic nervous system, which controls your fight or flight response.

呼吸的前半部分，吸气，会影响你的交感统，该统控制战斗或逃跑应。

You know, it's very clear that activation of the sympathetic nervous system is one main driver of the immune system.

你知道，很明显交感统的激活是免疫统的主要驱动因素之一。

The HPA Axis is essentially the endocrine system's companion to the sympathetic nervous system.

HPA 轴本质上是内分泌统与交感统的伴侣。

Our SNS reserve kicks in at times of mortal danger.

在面临致命危险时，们的交感统储备会被激活。

But the nerve fibers of your parasympathetic system begin both above and below where the sympathetic ones do.

但是副交感统的纤维是从交感的上方和下方开始的。

In addition to this, SNS activation causes excess energy to be lost by switching on thermogenesis in the muscles.

此外，交感统的激活会通过在肌肉中启动产热作用来导致多余的能量流失。

What happens on a physiological level is when our parasympathetic fires up and we slow down, nature comes into sharper focus.

在生理层面上发生的情况是，当们的副交感兴奋而们放慢速度时，自然就会变得更加清晰。

For example, if the tumor is in the thoracic region of the sympathetic chain, it can grow into the lungs, causing breathing difficulties.

例如，若肿瘤位于胸部的交感链，它会生长到肺中，导致呼吸困难。