3.9a Male reproductive system

Key Points:
1. The function of the bladder is to store urine.
2. The function of the testis is to carry out meiosis that produces the gamete called a sperm cell. Sperm cells are stored in the epididymis.
3. The vas deferens carries sperm cells to the penis during sexual stimulation. The walls of this tube pulse.
4. The prostate adds 20-30% of the volume of semen and contains sugars and its also alkaline. The alkaline is thought to neutralise the acidic secretions of the vagina.
5. The seminal vesicles produce sugar based secretions, and they're also alkaline. They make up 70% of the semen.
6. When sperm cells are combined with the prostate and seminal vesicles then it is called semen, and this is carried through a tube into the urethra. The urethra is the common tube that joins the left and right testis. Takes semen down the penis, and is also the exit for urine.
7. The function of the penis is to carry the sperm cells into the vagina during sexual intercourse.