前列腺是男性特有的一个器官,可认为是男性内在的性征。当男性第二性征开始发育时,脑垂体会刺激睾丸成长,此时,睾丸除了有精子的生长,也开始大量分泌男性激素,就在这种激素的刺激下,前列腺也开始长大,所以惟有睾丸功能的正常运转,前列腺才能正常发育。男性受到性刺激时,外生殖器官的变化则较明显,如阴茎的勃起、睾丸的提升,而前列腺会有节律性的收缩,参与了性高潮的形成,也禁闭了膀胱颈,防止精液逆流入 Prostate is a male-specific organ that can be considered as a male internal sexual characteristics. When the male secondary sexual characteristics began to develop, the pituitary gland will stimulate testicular growth, this time, in addition to testicular sperm growth, but also began to secrete a large number of male hormones, stimulated by this hormone, the prostate also began to grow, so Only testicular function of normal operation, the prostate can normal development. Male sexual stimulation, external genital changes are more obvious, such as the penis erection, testicular elevation, and prostate will have a rhythmic contraction, involved in the formation of orgasm, also closed the bladder neck, to prevent the countercurrent inflow of semen