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Epithelial tissue (simple squamous epithelium) forms the inner lining of blood vessels
Simple Squamous epithelial cells are found in the lung (alveoli), lining the lumen of blood vessels, and lymphatic vessels, and also in the kidneys.
It is the thin lining that goes through the outer surface of blood vessels and cavities.
Epithelial cells are the lining cells. they are not a tissue. this is to be understood first. the outermost lining is known as the epithelial cell lining. it is provided its nutrition through diffusion- indirectly through blood. BUT they DO NOT have a blood vessel supply, since they are not an organ/tissue, just a cell lining.
The epithilial tissues present in the brain make up the lining of the blood vessels.
Some examples of epithelial tissue are: Simple squamous (found lining the blood vessels), simple cuboidal (lines kidney tubules), Pseudostratified columnar (lines the respiratory passage), and transitional (inner lining of urinary bladder).
These are usually simple squamous epithelial cells. The epithelium lining the body cavities is called the mesothelium and is where the cancer mesothelioma arises from. The epithelium lining arteries and veins is called endothelium.
blood islands
endocardium
Simple epithelial tissues have no blood vessels and line or cover structures.
Alveoli
whereas most tissue are vascular (contain blood vessels), epithelium is avascular, meaning it lacks blood vessels. epithelial cells receive their nutrients from capillaries in the underlying connective tissue. although blood vessels do not penetrate epithelial sheets, nerve endings do; that is, epithelium is innervated (supply organ with nerve).