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

当这种情况发生时，我们的交感神经系统会触发战斗或逃跑反应。

Now this is because slow, deep breathing activates our parasympathetic nervous system, which, as we talked about, is our relaxing type nervous system that puts us into a state of rest and digest.

这是因为缓慢而深长的呼吸能我们的副交感神经系统——正如我们之前讨论过的，这是让我们进入“休息和消化”状态的放松型神经系统。

This typically happens when atrial cells get irritated and stressed - the causes of that might include electrolyte imbalances, drugs like cocaine or methamphetamines, ischemic damage like a heart attack, or anything that increases sympathetic activity, like anxiety.

这通常发生于心房细胞受到惹和应时，原因可能包括电解质紊乱、使用可卡因或麻黄碱类药物、心等缺血性损伤，或焦虑等增高交感神经性的因素。

If your bladder isn't full, and you're too busy to find a bathroom, it mostly activates the pontine storage area that keeps you from peeing, by inhibiting your parasympathetic activity and increasing sympathetic output.

如果你的膀胱没有，你太忙了，找不到浴室，它主要通过抑制你的副交感神经动和增加交感神经输出来桥储存区，防止你撒尿。

Besides those three tracts, very rarely, a hemisection of the spinal cord above the T1 spinal level can also damage the sympathetic chain that runs alongside the spinal cord and supplies the facial region.

在很罕见的情况下，除了上述三条神经束，脊髓在胸1水平以上的半切损伤还会损伤沿脊髓走行、支配对应面部区域的交感神经。

Coupled with the sudden relaxation, courtesy of the parasympathetic system, the body can experience chills because it cools too fast and is not used to the lower core temperature.

再加上副交感神经系统的突然放松，身体会感到发冷，因为它冷却得太快，不习惯较低的核心温度。

Your blushing reflex is controlled by something called your sympathetic nervous system, which is basically the system that takes over when you panic and happens without you ever choosing to blush.

你的脸红反射是由一种叫做交感神经系统的东西控制的，这个系统当你惊恐的时候会发生作用，你不需要主动去做，脸就会变红。

Sensors inside the washing machine will measure the state of sympathetic and parasympathetic nerves, and the built-in AI will use the collected data to create the most comfortable atmosphere possible.

洗澡机内的传感器将会感知用户的交感神经和副交感神经状态，内置智能系统会利用收集的数据来营造尽可能舒适的氛围。

Sympathetic overstimulation of muscles that control eye movements also make the eyes appear more open than normal, so you see more of the whites of the eyes.

控制眼球运动的肉交感神经被过度刺导致眼睛看起来比正常情况更大，所以你会看到更多眼白露出。

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，会影响你的交感神经系统，该系统控制战斗或逃跑反应。

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

当直肠被粪便填并受到牵拉时，就会向脊髓内的副交感神经元发出信号，启动排便反射。

To recover from a threat, our parasympathetic nervous system can put our body into a rest-and-digest state allowing us to relax and be calm.

为了从威胁中恢复过来，我们的副交感神经系统可以让我们的身体进入“休息和消化” 状态，让我们放松和平静。

That sensory input gets relayed to the hypothalamus, which stimulates the medulla oblongata, which then taps the parasympathetic fibers in the vagus nerve.

感官输入被传递到下丘，刺延髓，延髓然后点击迷走神经中的副交感神经纤维。

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神经链，它会生长到肺中，导致呼吸困难。

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，身体的副交感神经系统就会被触发，从而产生放松反应。

Your sympathetic fibers are thoracolumbar — meaning that they originate from between your thoracic vertebrae where your ribs attach, and the lumbar vertebrae just inferior to your ribs.

你的交感神经纤维是胸腰椎——这意味着它们起源于胸椎之间，肋骨连接的地方，和肋骨下面的腰椎。

In the thoracic region of the spine, neural crest cells differentiate into the neurons of the sympathetic chain, lying on either side of the entire spinal cord.

在脊柱的胸椎节段，神经嵴细胞分化成交感神经链的神经元，分布在整条脊髓的两侧。

Alright, as a quick recap, neuroblastoma is a condition where neural crest cells of the developing sympathetic nervous system and adrenal medulla do not differentiate normally.

好！简单回顾一下：神经母细胞瘤是由于发育中的交感神经链和肾上腺髓质的神经嵴细胞没有正常分化。

Your sympathetic nervous system is the part of your nervous system that responds to stress, and it does its job exceedingly well by focusing on what your body needs to do right now.

你的交感神经系统是你神经系统中对压力做出反应的一部分，它通过专注于你的身体现在需要做的事情来非常好地完成它的工作。

Part of what keeps your heart under control is your parasympathetic nervous system.

保证心脏处于可控状态的部分原因是你的副交感神经系统。