CH3- is the symbol for methyl group. H3C is also a symbol for the same. It is sometimes written this way to show the direct bonding between the carbon and its neighbouring atom on the right hand. For eg: Methyl alcohol is written as CH3OH (which too is a correct representation of the compound).
A simple squamous epithelium is a single layer of flat cells in contact with the basal lamina (one of the two layers of the basement membrane) of the epithelium.This type of epithelium is often permeable and occurs where small molecules pass quickly through membranes via filtration or diffusion.Simple squamous epithelia are found in capillaries, alveoli, glomeruli, and other tissues where rapid diffusion is required. Cells are flat with flattened/rounded nucleus.It is also called pavement epithelium due to its tile-like appearance.his type of epithelium is often permeable and occurs where small molecules pass quickly through membranes via filtration or diffusion. Simple squamous epithelia are found in capillaries, alveoli, glomeruli, and other tissues where rapid diffusion is required. Cells are flat with flattened/rounded nucleus.
This epithelium is found in certain locations within the body. These include the linings of the peritoneal, pleural and pericardial cavities. Other places simple squamous epithelium can be found include; the glomerulus of the kidney, the walls of capillaries, and the alveoli of the lungs.Here they are forming a thin sheet-like layer which allows for minimal resistance to diffusion. They allow the lungs to diffuse oxygen and carbon dioxide quite easily.his epithelium is found in certain locations within the body. These include the linings of the peritoneal, pleural and pericardial cavities. Other places simple squamous epithelium can be found include; the glomerulus of the kidney, the walls of capillaries, and the alveoli of the lungs.