The penis is the most common reproductive and excretory organ in males. it is the outlet for semen and urine. The shaft, the body of the penis, remains shrank and hangs free until stimulated. At the head of the penis, there is the urethral opening, at the tip. The frenulum and the mouth of the penis are sensitive to sexual stimulation. It has several nerve endings and can be stimulated for sexual pleasureDuring sexual intercourse, the partners involve experience d... More. The skin of the penis is also sensitive to sexual stimulation.
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