Human Development and Reproduction

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Testes in males store sperm and ovaries in females store the eggs. During human sexual reproduction the male penis ejaculates inside of the female vagina. This releases semen in the uterus. The semen has sperm in it which finds as egg or eggs in the female and fertilizes them. When an egg is fertilized by one sperm, no other sperm can enter it because its outer surface become hardened. When this happens it will then undergo mitosis and develop into a baby.
Human development and reproduction are influenced by things like hormones and environment. Some of the hormones that is affected is progesterone, testosterone, and estrogen. “Progesterone is made by corpus luteum in the empty ovarian follicle.”(Rodger, 2013, Par11) Progesterone maintains the uterus lining so if fertilization occurs the fetus will be protected. “Testosterone is made in the male’s testes and stimulates the male’s characteristics.”(Rodger, 2013, Par14) Estrogen is made in the female’s ovaries. “Estrogen stimulates the female’s characteristics as well as strengthening the uterus lining.”(Rodger, 2013, Par19)
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