Extending from the placenta on the mother's uterine wall to the embryo's abdominal area, the _____ delivers nourishment, oxygen, and water, and carries away carbon dioxide and other wastes.
A) umbilical cord
B) amniotic sac
C) embryo
D) teratogen

Question

Quizplus · Accepted Answer

The umbilical cord is the structure that extends from the mother's uterine wall to the embryo's abdominal area, and it is responsible for delivering nourishment, oxygen, and water to the developing fetus. It also carries away carbon dioxide and other wastes. The amniotic sac is a fluid-filled sac that surrounds and protects the fetus, but it does not deliver nutrients or remove waste. The embryo is the developing organism inside the uterus, but it is not responsible for delivering nutrients. Teratogens are substances or environmental factors that can cause birth defects, but they do not play a role in delivering nutrients to the fetus.

Extending from the Placenta on the Mother's Uterine Wall to the Embryo's