The first day of the menstrual cycle is marked by ____.
A) the beginning of ovulation
B) the onset of PMS
C) the beginning of menstruation
D) an increase in the thickness of the uterine lining
E) the beginning of the luteal phase

Question

The first day of the menstrual cycle is marked by ____.​
A) ​the beginning of ovulation
B) ​the onset of PMS
C) ​the beginning of menstruation
D) ​an increase in the thickness of the uterine lining
E) the beginning of the luteal phase​

Quizplus · Accepted Answer

The first day of the menstrual cycle is marked by the beginning of menstruation, which is when bleeding occurs as the uterine lining sheds.

The First Day of the Menstrual Cycle Is Marked by ____.​

The First Day of the Menstrual Cycle Is Marked by ____.