Relier Pairs how the male reproductive systems worksVersion en ligne pasos relacionados con el proceso de las partes del aparato reproductor masculino par Gonzalo Panadero Carramolino 1 Second step 2 Fifth step 3 Third step 4 First step 5 Fourth step In the seminal vesicle sperm are mixed with a liquid to form semen The testicles produce testosterone and sperm Semen enters the urethra inside the penis to be ejaculated The prostate gland protects and give nutrients to the sperm Mature sperm pass into the vas deferens