Dictionary > Anoderm

Anoderm

Definition
noun
The epithelial lining from the dentate line to the intersphincteric groove
Supplement
The anoderm refers to the epithelial lining of the anal canal located inferiorly to the dentate line and extends for about 1.5 cm. The term andoderm” etymologically comes from the word, anus, and derm” for skin. The anus is that part of the lower orifice of the alimentary canal that ejects feces and flatus. It is the opposite end of an animal’s digestive tract; the other end is the mouth or orifice.
The andoderm lacks hair, sebaceous glands, and sweat glands. And because of that, it is not regarded as a true skin despite that it is made up of squamous epithelium. It is characteristically pale in color, smooth, thin, and delicate. It may also appear shiny when stretched.
The andoderm may be sensitive to abrasion from the use of rough toilet paper and soaps containing chemical irritants, and as such care should be taken when cleaning the area. Since it has tactile and nociceptive nerve endings, pain and itchy sensations may manifest in this area.
Word origin: Greek, combining form of ánō, Latin ānus (ring, anus) + Greek -dermos (–skinned), derivative of dérma (skin)
See also:


You will also like...

Ecosystem Succession
Ecosystem Succession

If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

DNA carries genes coding for proteins
Genetic Information and Protein Synthesis

Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..

Plant meristem
Plant Meristems and Growth

In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

Freshwater lake ecosystem
Freshwater Producers and Consumers

Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

Community Patterns

Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..

takahē
Takahē (Porphyrio hochstetteri)

Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..

Related Articles...

No related articles found

See all Related Topics