During the headache phase, the trigeminal nerve plays a key role.

在头痛阶段，三起到了关键作用。

The second T is for Trigeminal nerve.

第二个 T 代表三。

Once activated, the trigeminal nerve transmits pain signals.

一旦被激活，三会传递痛觉信号。

It's the nerve in charge of the sensations you feel around the front of your head.

三控制的是头脑部的知觉。

Maybe the trigeminal nerve is less sensitive in certain demographics.

也许一些人口中，他们的三没有那么敏感。

Most commonly, the virus establishes a latent state within the trigeminal ganglia and the dorsal ganglia.

一般情况下，病会在三节和背节维持潜伏状态。

This, in turn, helps cause brain arteries to dilate, which activates the trigeminal nerve, causing us pain.

这反过来又会导致脑动脉扩张，从而激活三，引起疼痛。

That's why when you freeze it to sub-zero temperatures, the pain is around the temple and the forehead.

这也就是为什么你把三冻至冰点时，疼痛发生在颞部和。

A specific cranial nerve, cranial nerve V, is the trigeminal nerve and it's responsible for the sensation in the face.

举例来说，第五对脑三负责面部的感觉。

Brain freeze happens when something cold hits the roof of your mouth where it triggers your trigeminal nerve.

脑冻发生在冷的东西接触到口腔顶部时，那里会触发你的三。

The sensory neurons of the face have their cell bodies in the trigeminal nuclei and those around the genitalia are located in the sacral nuclei.

面部感觉元的胞体位于三核内，生殖器周围元的胞体位于骶核内。

Its sensory neurons create a nerve cell cluster called trigeminal ganglion, located in the bones on the side of the face between the eyes and ears.

它的感觉元组成了一组细胞簇，叫做三节，位于两侧眼与耳中间的骨骼中。

These elements—cold weather, humidity, and a stimulated trigeminal nerve—combine to create something that isn't an odor, but a sensory experience you've come to associate with snow.

这些元素——寒冷的天气、湿度和被刺激的三——共同创造了一种不是气味的感官体验，但你已将其与雪联系在一起。

Now, the trigeminal nerve is a natural part of the body, so if it's the real cause of brain freeze then that means everyone should get it.

三天生就在我们的人体结构中，所以如果它真的是造成冰淇淋头痛的原因，那就意味着应该每个人都会有。

Since the trigeminal and sacral nuclei serve just one side of the face or body, herpes vesicles and ulcers develop on the ipsilateral or same side as the affected nuclei.

因为三核和骶核只支配脸部或身体的一侧，所以，疱疹和溃疡也发生在被感染的核的同侧。

Just below that is the trigeminal nerve, the largest of the cranial nerves, which branches into three main strands — hence the 'tri' — and innervates the face and jaw muscles.

在三下面是三，最大的脑，它分为三股——因此是“三”股——支配着面部和下巴肌肉。

The trigeminal nerve normally transmits touch, temperature, and other sensations from the skin to most of the face, part of the scalp, and some of the blood vessels and layers covering the cerebral cortex.

三一般会传递来自大部分脸部皮肤、部分头皮、以及覆盖大脑皮层的一些血管和膜层的触觉、温度和其它感觉。