Dictionary > Squamous epithelium

Squamous epithelium

Definition
noun, plural: squamous epithelia
An epithelial tissue comprised of squamous cells, as seen in epidermis, endothelium, alveolar epithelium, etc.
Supplement
The epithelial tissue (also called epithelium) is one of the different types of animal tissues. It is made up of one or more layers of cells closely packed together. It is primarily involved in protecting the underlying structures, secretion, regulation, and absorption. This tissue may be classified histologically according to the cell shape. The different types of epithelia based on the cell shape are: (1) squamous epithelium, (2) columnar epithelium, and (3) cuboidal epithelium.
The squamous epithelium is composed of epithelial cells that are distinctively flat and scale-like. The cells are wider than tall, and appear polygonal when viewed atop. It gives a smooth, low-friction surface, which allows easy movement of fluids over it.
The squamous epithelium may also be classified according to the number of layers that make it up, e.g. simple squamous epithelium or stratified squamous. A simple squamous epithelium is comprised of only one layer of squamous cells. In contrast, the stratified squamous epithelium is comprised of more than one layer of squamous epithelial cells. An example of a simple squamous epithelium is the endothelium whereas a stratified squamous epithelium is found in the epidermal layer of the skin. Other examples of squamous epithelium include the alveolar epithelium of the lung, pericardium, and those lining some body cavities.
Also called:

  • squamous epithelial tissue

See also:

  • tissue
  • epithelium
  • Related term(s):


    You will also like...

    human brain structure
    The Conscious & Unconscious Nervous System

    This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

    3D rendering of an antibody
    Passive and Active Types of Immunity

    Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..

    vitamins
    A Balanced Vitamin Diet – Vitamins A – K

    A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

    Lentic community
    Freshwater Communities & Lentic Waters

    Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

    Hominid
    The Hominids

    The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..

    Darwin's Finches - Natural Selection
    Darwin and Natural Selection

    This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..

    Related Articles...

    No related articles found

    See all Related Topics