性器官-男性性器官
The Sex Organs - The Male Sex Organs

点击看大图
Click on picture.

男性内部性器官

男性内部性器官由产生激素和精子的睾丸、输送和储藏精子的管道系统和其分泌物成为射精后精液组成部分的附属器官所组成。

The Internal Sex Organs

The male internal sex organs consist of the testicles which produce hormones and sperm, a system of ducts which transport and store the sperm, and some accessory organs whose secretions become part of the ejaculated semen.