How Pregnancy Happens
Sperm production : sperm and the hormone testosterone are produced in the testes the testes. Produce over 70 million sperm each day. The sperm is then stored in the epididymis a coiled up tube on the back of each test Asst for 2 to 11 days. If the sperm are not used they may be released naturally during sleep called a wet dream or are simply reabsorbed into the body. During sexual arousal millions of sperm move through the vas deferens into the ejaculatory ducts of the prostate gland. The sperm are mixed with fluids to form semen. The penis expands and hardens as blood blows into a rectal tissue. During vaginal intercourse the penis is inserted into the female's vagina. Ejaculation : Contractions of the muscles at the base of the penis force the semen out of the penis depositing it into the vagina. The seminal fluid protects the sperm from the acidic environment of the vagina. The sperm then moved through the cervix and into the uterus. Once in the uterus, the sperm moved into t...