Name_____________ Date_________ Mr. Oggeri Period_______ Male Reproductive System Notes The Male Reproductive System . The testes are located in an external sac called the ______________. The scrotum is located outside the body cavity, where it is between 1 and 3 degrees ________ than normal body temperature. The lower temperature helps sperm development. Sperm Formation . ________________ forms sperm . Sperm forms in testes . Scrotum keeps cooler than rest . Semen is sperm plus protecting _____________ . Semen leaves testes through the __________ _____________ (sperm ducts) to the urethra before it exits. A sperm cell consists of: . _____________, which contains the nucleus . _______________, which contains energy-releasing mitochondria . __________________, which propels the cell forward Testes . Within each testis are clusters of hundreds of tiny tubules called _______________________________________ tubules. The seminiferous tubules are tightly coiled and twisted together. Sperm are produced in the seminiferous tubules. Sperm produced in the seminiferous tubules move into the ___________________, where they mature and are stored. Path of Sperm Travel . From the epididymus, sperm move into a tube called the ___________ ___________, which extends up from the scrotum into the abdominal cavity. This merges with the _____________________, the tube that leads to the outside of the body through the ___________________ Accessory Glands . The seminal vesicles, prostate gland, and bulbourethral gland . Glands lining the _______________________tract produce ___________________________ fluid. Seminal fluid _____________________ sperm and protects them from the acidity of the female reproductive tract. The combination of sperm and seminal fluid is called semen. Secondary Sexual Characteristics - Male . Produced by ______________________ . Deeper voice . Chest and facial hair . Lengthen bones . Increased size of testes for sperm production .