Question

question 1
the______is the inner membranous sac surrounding the fetus.
a amnion
b placenta
c endometrium
d chorion

Explanation:

• The amnion is a thin membrane that forms a sac around the fetus and contains amniotic fluid.
• The placenta is an organ that connects the developing fetus to the uterine wall for nutrient and gas exchange.
• The endometrium is the inner lining of the uterus.
• The chorion is the outermost membrane surrounding the embryo (in mammals, it contributes to placenta formation).

Answer:

A. amnion