The testes are where sperm are manufactured in the scrotum. The epididymis is a tortuously coiled structure topping the testis, and it receives immature sperm from the testis and stores it for several days. When ejaculation occurs, sperm is forcefully expelled from the tail of the epididymis into the deferent duct. Sperm then travels through the deferent duct through up the spermatic cord into the pelvic cavity, over the ureter to the prostate behind the bladder. Here, the vas deferens joins with the seminal vesicle to form the ejaculatory duct, which passes through the prostate and empties into the urethra. When ejaculation occurs, rhythmic muscle movements propel the sperm forward.
Reduces the amount of oxygen that reaches the body's tissues. Increases risk for blood clots. Damages blood vessels. Doubles the risk of stroke (reduced blood flow to the brain)
Explanation: The circulatory system is made up of blood vessels that carry blood away from and towards the heart : Arteries carry blood away from the heart and veins carry blood back to the heart .
