MICROANATOMY

EPITHELIUM CONNECTIVE TISSUE SKIN

EPITHELIA GLANDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Flattened cells
A
Squamous
B
Cuboidal
C
Columnar
D
None of the above
Explanation: 

Detailed explanation-1: -The squamous epithelium is made of a single thin layer of flattened cells with irregular boundaries. They are found in the walls of blood vessels and air sacs of lungs. Due to their single thin layer, they are involved in a functions like forming a diffusion boundary.

Detailed explanation-2: -Squamous cells are thin and flat, just like the scales after which they are named. They provide a smooth surface that avoids blood turbulence in the blood vessels and also allows fluids to easily flow over them.

Detailed explanation-3: -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-4: -Squamous cells tend to have horizontally flattened, nearly oval-shaped nuclei because of the thin, flattened form of the cell. Squamous epithelium is found lining surfaces such as skin or alveoli in the lung, enabling simple passive diffusion as also found in the alveolar epithelium in the lungs.

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