GENERAL HISTOLOGY

Detailed explanation-1: -When the erect penis is stimulated, muscles around the reproductive organs contract and force the semen through the duct system and urethra. Semen is pushed out of the male’s body through his urethra-this process is called ejaculation.

Detailed explanation-2: -Unable to leave the male body by their own motivation, the sperm cells are transported by muscular contractions. During the emission phase, the muscles around the epididymis and ductus deferens (the tube extending from the epididymis) contract to push the sperm into the prostate and urethra.

Detailed explanation-3: -At the moment of ejaculation the walls of the epididymis contract (squeeze) to create peristaltic waves that push sperm into the vas deferens. Nerves also stimulate the seminal vesicles and the prostate to contract which forces semen (the mixture of sperm and secretions) into the urethra.