AP PSYCHOLOGY

Detailed explanation-1: -It mediates the metabolic exchanges of the developing individual through an intimate association of embryonic tissues and of certain uterine tissues, serving the functions of nutrition, respiration, and excretion. All of the fetal membranes function by adapting the developing fetus to the uterine environment.

Detailed explanation-2: -This structure provides oxygen and nutrients to a growing baby. It also removes waste products from the baby’s blood. The placenta attaches to the wall of the uterus, and the baby’s umbilical cord arises from it.

Detailed explanation-3: -The placenta passes oxygen, nutrients, and other useful substances from the mother to the fetus. It also passes carbon dioxide and other waste s from the fetus to the mother. The placenta lets blood from the fetus and mother exchange substances without actually mixing.

Detailed explanation-4: -All mammals except the egg-laying platypus and the five species of echidnas, the only surviving monotremes, rely on a placenta for their reproduction.