The average menstrual cycle is about ________ days long; ovulation occurs on about day ________.

A) 30; 24
B) 28; 14
C) 24; 14
D) 20; 10
E) 32; 16

Menstrual Cycle

Series of changes that occur in sexually mature, nonpregnant women and result in menses. Specifically refers to the uterine cycle but is often used to include both the uterine and ovarian cycles.

Ovulation

The release of an egg (ovum) from the ovary, typically occurring midway through the menstrual cycle.