睾丸组织学丨医学英语视听学习

文摘   科学   2024-06-27 15:00   河南  


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Testis Histology 

睾丸组织学


During this tutorial, we'll cover all the structures seen in this histological slide – a trichrome stain section of the testis.

在这个教程中,我们将介绍该组织学切片,即睾丸三色染色切片中的所有结构。


We'll start with the tunicae, which surrounds the testes. We'll then discuss the internal lobular microstructure of the testes including the many cell types and how to distinguish between them.

我们将先看一下睾丸周围的被膜,然后讨论睾丸的内部小叶微结构,如多种细胞类型,以及它们的区分方法。


After we have gained an understanding of the histology, we'll finish with some clinical notes. Let's waste no time and get right into it.

了解组织学之后,我们最后看一些临床相关知识点。时不我待,马上开始学习吧!


So we all know that the testes are a pair of primary sex organs of the male which are located in the pubic sub-region of the pelvis along with the rest of the male reproductive components. They have two functional roles, which are sperm production and testosterone secretion.

我们都知道,睾丸是男性的一对主要性器官,它们与其他男性生殖器官都位于骨盆的耻骨分区。睾丸有两个功能作用:产生精子和分泌睾酮


Today, we're going to see exactly how the microanatomy of the testis fulfills this function.

今天,我们将看一下睾丸组织学是如何实现这些功能的。


The testes are tightly surrounded by coverings which are known as tunicae. There are three of these – the outermost of which is referred to as the tunica vaginalis.

睾丸由称为被膜的覆盖物紧紧包裹。被膜有三层,最外层是睾丸鞘膜


This is a dual-layered covering derived from the abdominal peritoneum. It is composed of an outer parietal layer and an inner visceral layer.

它是来源于腹膜壁层的双层膜,由外部的壁层鞘膜和内部的脏层鞘膜组成。


As is common with histological sections of the testis, the outer parietal layer is not present in our image, but if it were, it would be here separated from the rest of the testis by a small space known as the cavity of the tunica vaginalis.

如睾丸组织切片所示,图像未显示外面的壁层,但是如果有壁层鞘膜,它将通过称为鞘膜腔的小腔隙与睾丸的其余部分分离开。


The visceral layer of the tunica vaginalis, on the other hand, is present, firmly adhering to the underlying tunic which we will look at at a moment.

另一方面,我们可以看到鞘膜脏层,它紧紧粘附在下面的被膜上,我们稍后再来观察。


The visceral layer of the tunica vaginalis is formed from mesothelium, which is a simple squamous epithelium which otherwise lines our abdominal cavities and some organs.

鞘膜脏层间皮组成,间皮是一种单层鳞状上皮,分布在我们的腹腔和一些器官中。


The next layer is the tunica albuginea. We can see in the illustration that this is a whitish layer, which is the result of it being rich in collagen. We can also see this layer clearly in our trichrome section.

下一层是白膜。从图中我们可以看到,这是一层白色的层,因为它富含胶原蛋白。我们也可以在三色染色切片中清楚地看到这一层。


Collagen stains bluish-purple with this kind of stain which makes identifying the tunica albuginea very easy.

染色剂将胶原蛋白染为蓝紫色,因此我们能够非常容易地识别白膜。


相关单词学习


  • Tunicae


①发音和释义


tu·ni·cae/'tjuːnɪkə/n. 被膜

An enclosing membrane or layer of tissue.


单词 tunicae 的单数形式 tunica

(图源:太帅图库)


  • Mesothelium 


mes•o•the•li•um/ˌmezə'θiːlɪəm/n. 间皮

Epithelium of mesodermal origin, which lines the body cavities.


单词 mesothelium 由下列成分构成


meso-(前缀)中间,中央

+

(epi)thelium 上皮

(图源:太帅图库)

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