progesterone female sex hormone molecule. plays role in menstrual cycle and pregnancy. human body hormones

progesteron formula sex female flat progestogen gynecology egg anatomy atomic atoms biochemistry biology breast carbon cell chemical chemistry composition compound cycle education element estrogen gestagen hormone hydrogen icon illustration isolated ketone line luteinizing luteum medical medicine menopause menstrual molecular molecule neurosteroid ovary ovulation oxygen pregnancy progesterone puberty skeletal steroid structure