<prompt> Which of the following organs secretes zinc in man?Seminal vesicleProstateEpididymisVas  <response>: B i.e. ProstateMEM Semen:Semen contains sperm and secretions of the seminal vesicles, prostate, cowpers gland and probably, the urethral glands. An average volume ejaculation is 2.5- 3.5mL. Each mL of semen normally contains about 100 m illionQ sperms. 50 of men with counts of 20-40 million mL and essentially all those with counts 20 inillion mL are sterile. Morphologically abnormal or immotile spermatozoa also correlates with infeility. Human sperm move at a speed of -3mm minQ through the female genital tract. Sperms reach uterine tubes 30- 60 minutes after copulation. Composition of human semen 