Male and female sex cells are necessary for reproduction.
Egg cells are the female sex cells. They are large and round. From puberty on, one egg matures and passes through a Fallopian tube approximately every twenty-eight days.
In the egg cell is not fertilised, it leaves the body through the vagina. Minor bleeding occurs, called menstruation or a period.
Sperm are the male sex cells. They are very small. From the beginning of puberty on, about 200 million of these aare produced every day.
Egg cells are the female sex cells. They are large and round. From puberty on, one egg matures and passes through a Fallopian tube approximately every twenty-eight days.
In the egg cell is not fertilised, it leaves the body through the vagina. Minor bleeding occurs, called menstruation or a period.
Sperm are the male sex cells. They are very small. From the beginning of puberty on, about 200 million of these aare produced every day.
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