From WebRef.org
Revision as of 15:41, 15 September 2019 by Webref (talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
  • an embryonic membrane of higher vertebrates Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
  • A saclike outgrowth from the ventral surface of the posterior part of the embryonic gut and membrane in reptiles, birds, and mammals that functions as an embryonic urinary bladder or as a respiratory extension of the hindgut, carrying blood vessels to and from the placenta. Source: Curtis, Helena. 1968. Biology. New York, NY. Worth Publishers