Multiple choice

A chorion is

  1. a bag like structure within a pregnant woman's uterus containing the amniotic fluid that surrounds a fetus

  2. a membrane that originates around an embryo and contributes to the formation of the placenta

  3. a bag like structure in the uterus that is connected to a fetus by the umbilical cord

  4. another term used for umblical cord

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The chorion develops around the embryo early in a pregnancy. Later, as a fetus develops from the embryo, the chorion fuses with the amnion.