Introduction: There are a large number of curved seminiferous tubules in the testis with interstitial cells in between. Refined tubules are the place where sperm is produced. The number of sperm produced in a lifetime can reach more than 1 trillion.
The right testicle is relatively heavy
Normal males have two testes, located on the left and right side of the scrotum, oval, gray-white. The general left side is 1 cm lower than the right side. The famous Italian statue of David's testicles clearly shows this feature. The adult testicles are 3.5-4.5 cm long, 2-3 cm wide, and 1-2 cm thick. The average mass of the left testis of an adult male is 10.20 g, while the right testicle is relatively heavy, with an average mass of 10.70 g.
Male testicles become smaller after age 50
The testis of newborns is relatively large, and it shrinks about 1-2 months after birth. Before sexual maturity, the testis is basically at rest and develops rapidly after entering puberty. By the age of 50, it has gradually receded.
In adult testicles, sperm is produced every moment. Adults produce 300-600 sperms per gram of testicular tissue, and bilateral testicles produce hundreds of millions of sperm per day. This is one of the reasons why male contraceptive methods for controlling sperm production are much more difficult to inhibit female ovulation. Testicles produce at least 1 trillion sperm in their lifetime.
Counting the number of sperm of a man's life
The average number of ejaculations in a man's life: 7,200
The amount of semen for each ejaculation of a man: 1-2 teaspoon
Man's life average masturbation Ejaculation times: 2000 times
Men's life average total ejaculation: 53 liters
Men's average ejaculation speed: 45 km/h (average bus speed 40.2 km/h)
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