The Male Reproductive Organs
The main role of the male reproductive organs is to make sperm. The system consists of two round glands called testes that sit in a sac (the scrotum) outside the body, and the penis, which transports the sperm. The penis consists of the urethra (through which urine and sperm passes) and two tubes either side of the urethra (these fill with blood to give an erection). Sperm is produced in the testes and it travels up the vas deferens vessel to the urethra, where it mixes with prostate fluid to form semen. At climax the semen travels out of the urethra at great speed (known as ejaculation).
