Which of the following is an extraembryonic membrane correctly paired with its function in the developing chick?
A) Yolk sac: encloses yolk that will be digested in the gut of the embryo
B) Allantoic membrane: forms a sac that stores fecal wastes
C) Amnion: secretes a protective fluid that surrounds the embryo
D) Chorion: allows for transport of water between the embryo and the outside environment
E) Trophoblast: forms the outermost extraembryonic membrane that protects the embryo

Question

Quizplus · Accepted Answer

The amnion is a membrane that surrounds the developing chick embryo and secretes a protective fluid that cushions and supports the embryo. This fluid helps to protect the embryo from mechanical shocks and temperature fluctuations. The yolk sac (A) encloses the yolk that will be digested in the gut of the embryo. The allantoic membrane (B) forms a sac that stores metabolic waste products, such as urea. The chorion (D) functions in gas exchange and allows for diffusion of oxygen and carbon dioxide between the embryo and the outside environment. The trophoblast (E) forms the outermost layer of the blastocyst in the mammalian embryo and contributes to the development of the placenta.

Which of the Following Is an Extraembryonic Membrane Correctly Paired