SQUAMOUS EPITHELIAL CELL Meaning and
Definition
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Squamous epithelial cells are specialized cells that form a type of epithelial tissue. These cells are classified as squamous based on their shape and appearance under the microscope. The term "squamous" refers to their flat and irregular shape, resembling a fish scale or the petals of a flower. Epithelial cells are a major component of the epithelial tissue, which covers the body's surfaces, lines various organs, and forms the inner lining of blood vessels, cavities, and ducts.
Squamous epithelial cells can be found in various parts of the body, including the skin, respiratory system, digestive system, and urinary system. They are responsible for providing a protective barrier as well as allowing diffusion of gases, nutrients, and waste products.
These cells are typically arranged in a single layer or may be stratified to form a thicker tissue. Squamous epithelial cells have a flat nucleus that is elongated and located towards the base of the cell, allowing for a larger surface area. This characteristic enhances their function in areas where diffusion or filtration occurs, such as the alveoli of the lungs or the capillaries of the kidneys.
Overall, squamous epithelial cells play a crucial role in maintaining the integrity of tissues and organs by providing protection, absorption, and secretion functions.
