allantois

(noun)

membrane in an egg that stores nitrogenous wastes produced by the embryo and facilitates respiration

Related Terms

Examples of allantois in the following topics:

  • Characteristics of Amniotes

    • However, the eggs of amniotes contain three additional extra-embryonic membranes: the chorion, amnion, and allantois.
    • The allantois stores nitrogenous wastes produced by the embryo and also facilitates respiration.
    • The key features of an amniotic egg are the chorion, amnion, and allantois.