NEET BIOLOGY

Detailed explanation-1: -The simple epithelia (cells arranged in a single layer) promote the diffusion in tissues namely the regions of gas exchange in the lungs and the exchange of the wastes and nutrients at the blood capillaries.

Detailed explanation-2: -Simple squamous epithelial cells form a membrane that allows selective diffusion of materials to pass through. Diffusion helps with filtration, absorption and secretion functions.

Detailed explanation-3: -Alveoli are the site of gas exchange in the lungs. Because rapid diffusion of gases is necessary between the capillaries and the alveoli, a very thin epithelial layer is needed. As a result, alveoli use simple squamous epithelium so that gases can easily diffuses to and from the bloodstream.

Detailed explanation-4: -Simple squamous epithelium The primary function of simple squamous epithelia is to facilitate diffusion of gases and small molecules.

Detailed explanation-5: -A simple squamous epithelium, also known as pavement epithelium, and tessellated epithelium is a single layer of flattened, polygonal cells in contact with the basal lamina (one of the two layers of the basement membrane) of the epithelium.