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Epididymis Tightly coiled duct lying just outside each testis connecting efferent ducts to vas deferens. Storage and maturation of sperm.
Penis Three columns of erectile tissue: two corpora cavernosa and one corpus spongiosum. Urethra passes through penis. Male reproductive organ and also male organ of urination.
Prostate gland Surrounds the urethra just below the urinary bladder and can be felt during a rectal exam. Stores and secretes a clear, slightly alkaline fluid constituting up to one-third of the volume of semen. Raise vaginal pH.(25-30% of semen)
Seminal vesicles (2) Convoluted structure attached to vas deferens near the base of the urinary bladder. About 65-75% of the seminal fluid in humans originates from the seminal vesicles. Contain proteins, enzymes, fructose, mucus, vitamin C, flavins, phosphorylcholine and prostaglandins. High fructose concentrations provide nutrient energy for the spermatozoa as they travel through the female reproductive system.
Testes Inside scrotum, outside of body. Gonads that produce sperm and male sex hormones.Production of testosterone by cells of Leydig in the testicles.
Urethra Connects bladder to outside body, about 8 inches long. Tubular structure that receives urine from bladder and carries it to outside of the body. Also passage for sperm.
Vas deferens Muscular tubes connecting the left and right epididymis to the ejaculatory ducts to move sperm. Each tube is about 30 cm long. During ejaculation the smooth muscle in the vas deferens wall contracts, propelling sperm forward. Sperm are transferred from the vas deferens into the urethra, collecting fluids from accessory sex glands en route
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