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What joins embryo to placenta in the mother's body?
The placenta is an organ essential to the development of the fetus. In mammals, the fetus develops inside the body of the mother. The placenta is attached to the fetus by a cord containing blood vessels – the umbilical cord. The placenta is also firmly attached to the uterus of the mother. The role of the placenta is to bring the blood of the fetus close to the blood of the mother. This then allows oxygen and mineral salts to pass from the mother to the fetus, while carbon dioxide and other waste materials pass in the opposite direction.


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