what does the testicals do
The testicles. The testicles are two small oval shaped organs which hang below the penis in a pouch of skin called the scrotum. They are part of the male reproductive system. From the age of puberty the testicles produce sperm which can fertilise the female egg.The testicles also produce the hormone testosterone. Testosterone leads to the development of male qualities such as a deep voice and facial and body hair growth.he testicles. The testicles are two small oval shaped organs which hang below the penis in a pouch of skin called the scrotum. They are part of the male reproductive system. From the age of puberty the testicles produce sperm which can fertilise the female egg.