Millipedes can even absorb water through the rectum.

马陆甚至可以从直吸收水分。

If you need my nose, you'll find it firmly lodged up the rectum of the tenure committee.

要找我的话， 只需到教职选举委员会的马屁处寻我即可。

You know, the interesting fact about the rectum...Sheldon!

你知道，关于直有有趣的事实...Sheldon啊!

The puborectalis forms a sling-like formation around the rectum called the anorectal angle.

耻骨直肌与直形成类似吊索的结构，叫做肛角。

These parasympathetic neurons make the rectum contract and the internal anal sphincter relax.

这些副交感神经可以使直收缩，并使肛门内括约肌松弛。

The uterus is a hollow organ that sits behind the urinary bladder and in front of the rectum.

子宫是位于膀和直中间的空腔器官。

Maybe. But like our lawyers say, the world is full of things that can cause a rectum to bleed.

或许吧。但就像我们律师说的，这世界上有很多东西能导致直血。

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

当直被粪便填满并受到牵拉时，就会向脊髓内的副交感神经信号，启动排便反射。

The stool that's in the rectum will be evacuated.

直内的粪便将被排。

And here, special nerve receptors measure pressure, and when enough waste pushes against the rectum walls, it triggers the defecation reflex.

这里，特殊的神经感受器测量压力，当足够多的废物冲击直壁时，它会触排便反射。

Instead, from the gut, bacteria get to the rectum, anus and eventually colonizes the perineum, becoming part of the normal flora.

相反，细菌由道到达直、肛门，最终定居于会阴，成为正常菌群的一部分。

As more damage is done to the tissue, patients experience pain in the left lower quadrant, which corresponds to the rectum.

随着组织损伤加重，患者会感到左下腹疼痛，这位置对应的是腹腔内的直。

Our generally gut just has a lot of bacteria, and so bacteria can exist around our rectum.

我们通常的道只有很多细菌，因此直周围可能存在细菌。

Hemorrhoids are swollen veins near the anus and rectum, which can be painful and lead to itching and bleeding.

痔疮是肛门和直附近的肿胀静脉，会引起疼痛并导致瘙痒和血。

Here, special nerve receptors measure pressure, and when enough waste pushes against the rectum walls, it triggers the defecation reflex.

在这里， 特殊的神经感受器测量压力，当足够多的废物推到直壁时，它会触排便反射。

A disruption of that neuroblast journey in that time window, means that nerve fibers don't develop in the rectum and parts of the colon.

（假如那时）神经母细胞的旅程被中断，意味着神经纤维不能在直和部分结中形成。

The sigmoid colon, shaped like an S, is at the distal end of the descending colon and leads into the rectum.

形似S的乙状结位于降结的远端并通向直。

The most common sites in which cancer develops include the skin, lungs, female breasts, prostate, colon and rectum, and corpus uteri.

肿瘤展的最常见部位包括皮肤，肺，女性乳房，前列腺，结和直以及子宫。

The prostate is a small gland, about the size and shape of a walnut, that sits under the bladder and in front of the rectum.

前列腺是一大小形状都与核桃相似的小腺体，位于膀下方，直前方。

Extending from the end of the ileum to the anus, it is divided into four parts: cecum, colon, sigmoid colon and rectum.

大从回末端延伸到肛门，并分为四部分：盲，结，乙状结和直。