A man can not control his testis. Testicles are not controlled by thought.
First of all women does not have testis aka testicles. And a man can not insert his testicles into a woman's vagina.
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testis
It is not likely to happen.
1- Undescended testis 2- Ectopic testis 3- Atrophic testis 4- Retractile testis 5- Surgically removed testis
the other call for testis is testicle
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They are produced in testis. There are tubules in testis
The testis produce the male androgen testosterone.
The function squid testis is to produce sperm during reproduction.
The testis produce the male androgen testosterone.
In a male, the testis have several important roles. Probably the most important thing the testis do is make sperm, allowing us to reproduce and continue the species. Another thing the testis does is release testosterone which converts the androgynous physique of a child into the masculine one of a man, with a larger muscle mass. Testosterone is also one of the hormones that causes the changes of puberty and secondary sexual characteristics which signal to women that they are able to father children.