The parts of the human male reproductive system. The bladder empties into the urethra but is not part of the reproductive system to pass urine out of the man's body to pass semen out of the man's body ...

Humans are sexual, meaning that both a male and a female are needed to reproduce. Each is equipped with specific organs capable of producing specific cells needed to procreate. In conjunction with a ...

Most girls begin puberty between ages 8 and 14, with an average of 11. Girls develop more quickly than boys and most finish puberty within four years. Most boys begin puberty between ages 9 and 14, ...

In men and in women, middle age brings about changes to the reproductive system that eventually lead to infertility â although men stay fertile for longer. These changes are partly due to dramatic ...

Recently, scientists have reviewed the existing literature to understand how space travel, space radiation, and microgravity affect human reproductive functions. This review was published in Npj ...