[40] These adaptations have transpired so that you can release and keep sperm to the best level with the vaginal tract. Consequently, this adaptation also leaves the sperm fewer at risk of sperm displacement and semen decline. Another excuse for this adaptation is, due to the nature with the human posture, gravity produces vulnerability for semen r… Read More


The ischiocavernosus muscle really helps to stabilize the penis in the course of erection by compressing the crus and slowing the return of blood throughout the veins. The bulbospongiosus muscle mass also contributes to erection together with the expulsion of urine and semen.The penis could be the male copulatory organ. The phrase penis normally re… Read More