Question

Which process occurs when an egg cell, blood, and pieces of uterine lining leave the body through the vagina?

Answer 1

menstration period. every month a women goes through a cycle. the menstration cycle a.k.a their "period"

Answer 2

Menstrual phase or Menses

Step-by-step explanation:

Menses refers to the menstrual flow that consists of blood, epithelial cells shed from the uterine lining, mucus and tissue fluid. It occurs under influence of lowered levels of progesterone and estrogens in absence of fertilization. The reduced levels of progesterone and estrogens stimulate release of prostaglandins which in turn cuts off the oxygen supply to uterine lining by constriction of blood vessels. The dead cells are shed off in form of menses through vagina.