Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,591,770,211 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

Cardinal Veins

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.01 sec.
Cardinal Veins 

the main paired anteroposterior veins carrying blood to the heart, well developed in the embryos of all vertebrates and man. In adults, the cardinal veins are completely developed only in rotifers, fish, and caudate amphibians.

The anterior cardinal veins, or jugular veins, collect blood from the head, while the posterior cardinal veins collect blood from the kidneys and walls of the trunk. The anterior and posterior cardinal veins merge on each side of the body to form the ducts of Cuvier. In lungfish and terrestrial vertebrates the function of the posterior cardinal veins is performed by the posterior (inferior) vena cava, which in part develops from them. The vestiges of the posterior cardinal veins are reduced in acaudate amphibians but form the vertebral and azygos veins in terrestrial vertebrates. The anterior cardinal veins are part of the anterior (superior) vena cava.



How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
With the exception that the cardinal veins on the right and the left side drain into the right atrium, the cardinal venous system is bilaterally symmetrical at this stage.
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.