i. 1 to 5 days is the period of menstruation.
ii. Ovulation occurs on 14th or 15th day.
iii. Corpus luteum is active till the 28th day of menstrual cycle. During this time if there is no union of sperm and ovum, then corpus luteum degenerates. Corpus luteum secretes estrogen and progesterone.
iv. Ovary and uterus undergo changes during menstrual cycle.
v. In menstrual cycle, days 5 to 14 are period of regeneration of endometrium.
vi. Period of secretions of glands in endometrium is 15 to 28 days.