上皮和内皮之间的差异

这关键区别between epithelium and endothelium is thatthe epithelium is the tissue that lines the outer surfaces of器官and血管，以及腔in many internal organs while the endothelium is the tissue that lines the interior surface of血管and淋巴管。

组织是一组物理连接的细胞和相关的细胞间物质，专门用于特定功能。根据它们的结构和功能，动物体内有四种基本类型的组织，例如上皮组织，结缔组织，肌肉组织和神经组织。上皮组织是所有外体和内部表面的覆盖。因此，它在皮肤的整个外表面，内部空腔和腔内以及容器的外表面和外表面排列。

而且，他们还帮助exocrinefunction by the formation of glands. The external epithelium is called the exothelium; it is the epithelium that covers the skin and organ lining. There are also two subtypes of the epithelium:中胚层这将内部空腔和流明以及覆盖血管和心脏室的间皮线条。因此，从本质上讲，内皮是上皮组织的一部分，可帮助人体保护自身免受损害。

CONTENTS

1。概述和关键差异
2。什么是上皮
3。What is Endothelium
4。上皮和内皮之间的相似性
5。并排比较 - 上皮与表格形式的内皮
6.Summary

什么是上皮？

Epithelium is the tissue that lines the outer surfaces of organs and blood vessels and inner surfaces of cavities of organs. It may have one or more cell layers that are closely packaged and arranged. There are three different shapes of epithelial cells such as squamous, columnar, and cuboidal.

真正的上皮组织的外胚层的和endodermal embryonic origin. This tissue is avascular hence the adjoining connective tissue supplies it with food nutrients and energy through simple diffusion. Accordingly, blood and lymph vessels and nerve endings perforate the basal membrane of the epithelium for sense. These provide the functions of protection from mechanical physiological and microbial damage, secretary function of enzymes, hormones and lubricating fluids by the glandular epithelium and sensory function through the nerve endings.

Moreover, the表皮是覆盖我们皮肤的上皮组织之一。分泌，选择性吸收，保护，跨细胞运输和感应是上皮组织的功能。

什么是内皮？

Endothelium is a specialized type of epithelium found in the lining of blood and lymphatic vessels. Also, it lines the heart cavities. Furthermore, this tissue has an embryonic mesodermal origin. It usually helps smooth flow of fluid upon its surface. It constitutes flattened cells adhered to a basal membrane with elastin fibres running through it. Therefore, this gives the endothelium a distensible quality and the ability to accommodate the fluctuating flow of fluid.

Likewise, endothelial cells form a sheet-like a barrier to regulate the entry of external material, microorganisms and toxins, as well as fluid flow in and out of the vessels. They are sensitive to blood pressure and secrete vasodilators such as prostacylin and Nitric oxide in response to high blood pressure. Consequently, when there is damage to the blood vessel, the endothelium secrets thromboplastin; this helps the coagulation of blood and responds to cytokinase to increases the permeability to white blood cells.

上皮和内皮之间有什么相似之处？

• 上皮和内皮线身体表面。
• 两组都保护人体和器官。
• 此外，它们涉及分泌和感觉功能。
• 而且，两者都具有高生成能力和愈合能力。

上皮和内皮有什么区别？

上皮组织在整个体内的器官和血管的外表面以及许多内部器官的腔内表面。另一方面，内皮是指排列血管内部表面和淋巴管的细胞。因此，这是上皮和内皮之间的关键区别。然而，内皮是一种专门的上皮组织，已经过修改以对血液和淋巴血管的内部表面排列。

此外，上皮和内皮之间的另一个区别是上皮可能具有单细胞层或许多细胞层。但是，内皮具有单细胞层。此外，上皮是外胚层或内皮的，而内皮是中皮的起源。

以下信息图表示上皮和内皮之间差异的更多详细信息。

摘要 - 上皮与内皮

上皮和内皮是两种类型的组织，这些组织是在身体外表面，内部器官，血管和淋巴管的表面。总结上皮和内皮之间的差异；上皮在内部器官的器官，血管和腔内表面的外表面。另一方面，内皮线在血管和淋巴管的内表面。此外，上皮可以具有许多细胞层，而内皮只有一个细胞层。此外，上皮具有外胚层和内皮起源，而内皮具有中皮。上皮和内皮都具有类似的功能，例如分泌，保护和感觉功能。

参考：

1。“Endothelium.” Wikipedia, Wikimedia Foundation, 27 Nov. 2018.在这里可用

图片提供：

1.“ illu上皮”（公共领域）下议院维基梅迪亚
2. Blausen.com工作人员（2014年）的“ Blausen 0055动脉墙结构”。“ Blausen Medical 2014的医学画廊”。Wikijournal of Medicine 1（2）。doi：10.15347/wjm/2014.010。ISSN 2002-4436。- 自己的工作，（CC由3.0）通过下议院维基梅迪亚