SIMPLE SQUAMOUS EPITHELIUM – 3
Endothelium is the name given to the simple squamous epithelium that lines the internal cavity (the lumen) of blood vessels, lymphatic vessels and the heart.
The image shows blood vessels that run inside connective tissue. This is a tissue that is commonly very vascularized, because the blood vessels that irrigate the tissues and organs lie inside it. Lymphatic vessels are also commonly found in the connective tissue.
The inner region of these blood vessels is filled with blood cells.
Remember that blood vessels are small hollow tubes and after being sectioned their wall looks like a ring. The walls of the two blood vessels of this image are very thin and are made up of only one layer of a simple squamous epithelium whose cells are also thin. Their nuclei, which are also quite flat, can be clearly seen.
As all epithelia, the endothelium is supported by a basement membrane, which is not seen in this image.
When you move the cursor or click over the image, the nuclei of the epithelial cells become highlighted in blue and the cytoplasm in red.
The image shows blood vessels that run inside connective tissue. This is a tissue that is commonly very vascularized, because the blood vessels that irrigate the tissues and organs lie inside it. Lymphatic vessels are also commonly found in the connective tissue.
The inner region of these blood vessels is filled with blood cells.
Remember that blood vessels are small hollow tubes and after being sectioned their wall looks like a ring. The walls of the two blood vessels of this image are very thin and are made up of only one layer of a simple squamous epithelium whose cells are also thin. Their nuclei, which are also quite flat, can be clearly seen.
As all epithelia, the endothelium is supported by a basement membrane, which is not seen in this image.
When you move the cursor or click over the image, the nuclei of the epithelial cells become highlighted in blue and the cytoplasm in red.
Connective tissue. Hematoxylin and eosin. Medium magnification.
