前列腺
前列腺是一個硬實的、栗子般大小的圓形結構。其實質有尿道和早前描述過的射精管穿過。前列腺會持續地產生分泌物，少許會隨著尿液而流失，有些則構成精液的大部分。在一些老年人，前列腺肥大，使尿道前列腺部受到壓迫，從而排尿困難。這種病症可能需要動手術。
The Prostate Gland
The prostate gland is a firm, round body about the size of a chestnut, and it lies directly below the bladder. It is traversed by the urethra as well as the two ejaculatory ducts described earlier. The prostate constantly produces secretions. Some of these are passed off with the urine. Others make up the greater portion of the semen. In some older men, the prostate gland enlarges, causing pressure on the enclosed part of the urethra and thus making urination difficult. In these cases, surgery may become necessary.
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