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sexual activity . During this process, the male inserts his erect penis into the female's vagina and ejaculates semen, which contains sperm. The sperm then travels through the vagina and cervix into the uterus or fallopian tubes for fertilization of the ovum. Upon successful fertilizationhttps://reproductivehealth.conferenceseries.com/ and implantation, gestation of the fetus then occurs within the female's uterus for about nine months, this process is understood as pregnancy in humans. Gestation ends with childbirth, delivery following labor. Labor consists of the muscles of the uterus contracting, the cervix dilating, and therefore the baby passing out the vagina (the female genital organ). Human's babies and youngsters are nearly helpless and need high levels of parental look after a few years. One important sort of parental care is that the use of the mammary glands within the female breasts to nurse the baby. The female genital system has two functions: the primary is to supply egg cells, and therefore the second is to guard and nourish the offspring until birth. The male genital system has one function, and it's to supply and deposit sperm. Humans have a high level of sexual differentiation. additionally to differences in nearly every sex organ , numerous differences typically occur in secondary sexual characteristics.    

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