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biology
The reproductive system is a collection of internal and external organs in both males and females. The male reproductive system consists of six major parts. The scrotum, testicels, sperm, vas deferens, urethra, and the penis. Sperm are reproductive cells produced in the testicles held in the scrotum which is a pouch of skin where the testes are contained. Inside the testicles is where the production of the male hormone testosterone takes place. The penis and urethra belong to both the urinary and reproductive systems in males. During the ejaculation of sperm, the sperm is propelled from the epididymis through the muscular vas defernes. When ejaculatory ducts open into the urethra which is where a tube passes from the urinary bladder to the outside of the body and sperm is released from the penis.
The female reproductive system is made up of four major parts. The ovaries, fallopian tubes, uterus, and vagina. Ovaries are in the abdominal cavity of the female that produce ova which are egg cells produced there and female hormones. Once a month a female mensturates from the release of un-used eggs in the ovary which travel down the fallopian tubes. The uterus is a thick muscualr wall that can expand during pregnancy and where fertalized eggs implant themselves. And the vagina is a thin walled chamber that forms the birth canal through which the baby is born; it also receives semen during heterosexual intercourse for reproduction . A females entire egg supply is developed when she is still an unborn baby. At the start of puberty, the eggs are ripened inside the ovary and released every month. After a period, rising levels of the hormone oestrogen help to thicken the lining of the womb.