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Simple columnar epithelium is a single layer of columnar epithelial cells which are tall and slender with oval-shaped nuclei located in the basal region, attached to the basement membrane. In humans, simple columnar epithelium lines most organs of the digestive tract including the stomach , and intestines .
Enterocytes, or intestinal absorptive cells, are simple columnar epithelial cells which line the inner surface of the small and large intestines. A glycocalyx surface coat contains digestive enzymes. Microvilli on the apical surface increase its surface area.
A brush border (striated border or brush border membrane) is the microvillus-covered surface of simple cuboidal and simple columnar epithelium found in different parts of the body. Microvilli are approximately 100 nanometers in diameter and their length varies from approximately 100 to 2,000 nanometers.
Simple cuboidal - reproductive - male: efferent ducts: Pseudostratified columnar - reproductive - male: epididymis: Pseudostratified columnar, with stereocilia - reproductive - male: vas deferens: Pseudostratified columnar - reproductive - male: ejaculatory duct: Simple columnar - reproductive - male (gland) bulbourethral glands: Simple ...
There are three principal shapes of epithelial cell: squamous (scaly), columnar, and cuboidal. These can be arranged in a singular layer of cells as simple epithelium, either simple squamous, simple columnar, or simple cuboidal, or in layers of two or more cells deep as stratified (layered), or compound, either squamous, columnar or cuboidal ...
The simple columnar epithelium of the collecting duct system transitions into urothelium near the junction of a papillary duct and a minor calyx. [6] These cells work in tandem to reabsorb water, sodium, and urea and secrete acid and potassium. The amount of reabsorption or secretion that occurs is related to needs of the body at any given time.
The ependyma is the thin neuroepithelial (simple columnar ciliated epithelium) lining of the ventricular system of the brain and the central canal of the spinal cord. [1] The ependyma is one of the four types of neuroglia in the central nervous system (CNS).
Metaplasia (from Greek 'change in form') is the transformation of a cell type to another cell type. [1] The change from one type of cell to another may be part of a normal maturation process, or caused by some sort of abnormal stimulus.