As the male proceeds by means of puberty, the semen develops mature characteristics with increasing quantities of normal sperm. Semen produced 12 to 14 months after the first ejaculation liquifies after a brief period of time. Within 24 months of the primary ejaculation, the semen quantity and the quantity and traits of the sperm match that of grownup male semen. [7]In addition, best site surgical removal of a part of the prostate gland (one of many organs by which many of the fluid in semen is produced), in addition to the use of certain medication for high blood stress, can lead to retrograde ejaculation (a disorder by which the semen is passed backward into the bladder, to exit with the urine, quite than out through the penis).Don't consider Cloaca as a nightmare however somewhat the realization of a dream. Positive, he's a tad gross, but humans have dreamed of pooping automatons because the 18th century [supply: Wood]. Plus, the work continues at Bristol Robotics Laboratory's EcoBot program, the place researchers develop robots capable of not solely digesting organic matter, but also producing power from the act.