Dorsum (biology)

Dorsal view of a rove beetle

In anatomy, the dorsum is the upper side of animals that typically run, fly, swim or crawl in a horizontal position, and the back side of animals (like humans) that walk upright. In vertebrates the dorsum contains the backbone. The term dorsal refers to anatomical structures that are either situated toward or grow off that side of an animal. The opposite side of the animal is described with the terms ventrum and ventral.

In lepidoptera (moths and butterflies), the dorsum also refers to the trailing edge of the wing (the leading edge is called the costa).

The term "dorsum" is used for the upper surface of the body of nudibranch sea slugs.

Human anatomy

Dorsal (posterior) means the back or toward the back of the body; behind. For example, the heart is posterior to the breastbone. [1] Due to its embryological orientation on the posterior during development, the top-side of the foot is referred to as the "Dorsum of the foot".

In neurobiology, nerve rootlets stemming from the spinal cord form dorsal (sensory) and ventral (motor) roots before these unite to form the spinal nerve.

See also

References

  1. ^ "Essentials of Human Anatomy and Physiology", Elaine N. Marieb, Tenth Edition


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.