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Simple squamous epithelium
Simple squamous epithelium forms the inner lining of blood vessels (seen here), lymphatics, and the heart. In these locations, this epithelium is given the proper name of endothelium. Blood vessels 500x, 1000x

Simple squamous epithelium
Simple squamous epithelium forms the inner lining of blood vessels (seen here), lymphatics, and the heart. In these locations, this epithelium is given the proper name of endothelium. Blood vessels 500x, 1000x

- Nuclei
Simple squamous epithelium forms the inner lining of blood vessels (seen here), lymphatics, and the heart. In these locations, this epithelium is given the proper name of endothelium. Blood vessels 500x, 1000x

- Cytoplasm
Simple squamous epithelium forms the inner lining of blood vessels (seen here), lymphatics, and the heart. In these locations, this epithelium is given the proper name of endothelium. Blood vessels 500x, 1000x

Right image >
The image on the right is an enlargement of the inner portion of a blood vessel wall similar to that in the left image. At this higher magnification, the squamous cell nuclei and the thin cytoplasm are readily visible.