Examlex
Heterosexual behavior is generally a progression beginning with kissing,then petting,moving on to oral sex,and then to penis-in-vagina intercourse.These behaviors tend to follow _____.
Ovaries
Female reproductive organs in vertebrates that produce eggs (ova) and hormones like estrogen and progesterone.
Estrogen
A collection of steroid hormones that support the growth and preservation of female body traits.
Progesterone
A steroid hormone released by the ovaries that prepares the uterus for pregnancy and maintains it until birth.
Melatonin
A hormone produced by the pineal gland that regulates sleep and wake cycles.
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