Completar frases Fertilization, pregnancy and childbirthVersión en línea How a human being is born por David Castillo 1 Let's learn how a human being is born bring on ! Two beings of the opposite sex can carry out a sexual act that can bring a new human being into the world if they unite their reproductive organs , yes , and the reproductive organs are what help us to know if we are a or a , it can be the penis , testicles vulva , sperm are created inside a man's testicles , these are introduced into the reproductive organs of the woman , the vulva , which has eggs , the sperm start a race , the champion sperm reaches the egg and unite to form a new human being that engenders the sperm with the egg unite and form a cell that separates , the new human being will have the characteristics of a father and a mother , babies grow eyes , hands , legs and up to four months we know their sex , organs such as the brain , the spine and some other vital organs such as the heart and at other times or at the same time the eyes , arms , legs and genitals , have that to hang on for babies to be born up to months .
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