Which extraembryonic tissue burrows into, and thus attaches to, maternal tissues?
A) the amnion
B) the yolk sac
C) the chorion
D) the blastocyst protein coat
E) the inner cell mass

Question

Which extraembryonic tissue burrows into, and thus attaches to, maternal tissues?​
A) ​the amnion
B) ​the yolk sac
C) ​the chorion
D) ​the blastocyst protein coat
E) ​the inner cell mass

Quizplus · Accepted Answer

The chorion is the extraembryonic tissue that develops into the placenta, burrowing into and attaching to the maternal tissues to facilitate nutrient and waste exchange between the mother and the developing embryo.

Which Extraembryonic Tissue Burrows Into, and Thus Attaches To, Maternal