Discussion
Which of the following organs secrets zinc in large amounts in man ?
Answer: B
Zinc is secreted in large amounts by the prostate gland.
Prostatic fluid is unusually rich in zinc, along with citric acid and acid phosphatase. Because of this, a high zinc content (shown for example by a zinc test) helps identify a stain as seminal fluid, and seminal zinc is used as a marker of prostate function.
The seminal vesicles secrete fructose, the energy source of spermatozoa, and most of the volume of semen. The epididymis stores and matures sperm, and the vas deferens carries them; neither is a major source of zinc.
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