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