10 unexplored secrets about sperm

The sperm are small, but they contain many unexplored secrets.

The report posted on the Fox News website in the US will help us understand some scientific knowledge about sperm.

- Sperm is produced in the testicles, it takes up to 10 weeks to mature.

- Adult sperm stored in the epididymis or " testicular bank " is located in the upper part of the testicle. Storage time can be up to two weeks.

- In the total amount of sperm, sperm accounts for 5%, other liquid components are responsible for providing nutrition to sperm and ensuring sperm enters the female reproductive system in a convenient way.

- Healthy men can produce between 70 million and 150 million sperm per day.

- Sperm can exist for five days in female womb.

- The movement speed of sperm carrying Y chromosome is faster than that of X chromosome sperm.

- Human sperm is 55 microns long (1 micron = 1 / 1,000mm), almost half the diameter of a human hair.

- Sperm just moves forward, not backward.

- Normal sperm consists of parts such as head, middle and tail. Unusual sperm will have two head or two tail parts.

- Sauna can reduce sperm count in men, because too high temperature will affect normal sperm development.