503,359 views
30 votes
30 votes
What is the duration of menstrutation cycle?

[1 marks]

30


31


25


28

User Gricel
by
2.6k points

2 Answers

21 votes
21 votes

Answer:

The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that make pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone.

User Sneusse
by
3.1k points
28 votes
28 votes

Answer:

28 days ____________________________

User Sabba Keynejad
by
3.0k points