Dictionary > Simple columnar epithelium

Simple columnar epithelium

Definition
noun, plural: simple columnar epithelia
Simple epithelium composed of columnar epithelial cells
Supplement
A simple epithelium is an epithelial tissue that is composed of a single layer of epithelial cells. These cells are in direct contact with the basement membrane. This tissue may be classified histologically according to the shape of the cells it is made up of. It may be squamous (scale-like), cuboidal (cube-like), or columnar (column-like).
A simple columnar epithelium is a simple epithelium made up of columnar epithelial cells. The columnar epithelial cells are characterized by being taller than wide, i.e. the height is about four times the width. The nucleus is elongated and near the base of the cell. The cells may be ciliated or non-ciliated. Some simple columnar epithelia may form microvilli projections.
The simple columnar epithelium is mainly involved in secretion, excretion, and absorption. The ciliated type can be found in the bronchi, uterine tubes, the uterus, and part of the spinal cord. These epithelia are capable of moving mucus or other substances through the beating of their cilia. The cilia also aid in generating currents in the lumen of the uterine tube and consequently help propel the egg cell toward the uterus.
The non-ciliated simple columnar epithelium is found in the digestive tract and urinary bladder.
Also called:

  • simple columnar epithelial tissue

See also:

  • simple epithelial tissue
  • epithelium
  • pseudostratified columnar epithelium


  • You will also like...

    green plant cells
    Plant Cells vs. Animal Cells

    Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..

    Still freshwater and plants
    Still Freshwater & Plants

    Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

    Schematic diagram of DNA replication
    DNA Structure & DNA Replication

    DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

    Endemic Flora of New Zealand
    New Zealand’s Unique Flora

    If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..

    Cell Biology
    Cell Biology

    The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..

    Physiological Homeostasis
    Physiological Homeostasis

    Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..

    Related Articles...

    No related articles found

    See all Related Topics