NEET BIOLOGY

Detailed explanation-1: -Simple squamous epithelium. Simple squamous epithelium – a single layer of thin flattened cells. This type of epithelium forms thin delicate sheets of cells through which molecules can easily pass (diffusion, filtration).

Detailed explanation-2: -These flattened cells are called endothelial cells . The nuclei are frequently found protruding into the lumen of the vessel. Observe the numerous large blood vessels present in the periphery of this section. Simple squamous epithelium is also the outer covering of the uterine tube which is termed the mesothelium .

Detailed explanation-3: -Squamous epithelium: Squamous epithelial cells are flat and sheet-like in appearance. Cuboidal epithelium: Cuboidal epithelial cells are cube-like in appearance, meaning they have equal width, height and depth.

Detailed explanation-4: -Simple squamous epithelium is also known as pavement epithelium. It is composed of large flat cells whose edges fit closely together, like the tiles in a floor. This epithelium is present in terminal bronchioles, alveoli of the lungs, walls of the Bowman’s capsules, etc.

Detailed explanation-5: -Simple squamous epithelial cells are thin and flat (the thinnest of all epithelial cell-types), which allows them to have a large surface area that is exposed to the lumen on one side (the apical surface), and to the basement membrane (i.e. basal lamina) on the other (the basolateral surface; Figure 1).