HOW BABY BREATHE INSIDE THE WOMB?

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 HOW BABY BREATHE INSIDE THE WOMB?



Babies receive oxygen and nutrients while in the womb through a process called fetal respiration. This process is quite different from how we breathe after birth.

Here's how it works:

  1. Oxygen Supply from the Mother: Oxygen for the baby is supplied through the mother's bloodstream. The mother breathes in oxygen from the air, which is absorbed into her bloodstream through her lungs. The oxygen-rich blood is then pumped by her heart to the placenta.

  2. Oxygen Exchange at the Placenta: The placenta is an organ that forms during pregnancy and attaches to the wall of the mother's uterus. It acts as a bridge between the mother and the baby. At the placenta, oxygen from the mother's blood diffuses across the placental barrier and into the baby's blood.

  3. Transport via the Umbilical Cord: Oxygen-rich blood from the placenta is transported to the baby through the umbilical cord, which is attached to the baby's abdomen. The umbilical cord contains blood vessels, including one vein that carries oxygenated blood to the baby.

  4. Blood Circulation in the Fetal Body: The oxygenated blood from the umbilical vein enters the baby's body and travels to the heart. In the fetal heart, there's a small opening called the foramen ovale that allows some of the oxygen-rich blood to bypass the baby's developing lungs.

  5. Oxygen Use by the Fetal Body: The oxygen-rich blood is distributed to the developing organs and tissues of the baby's body, providing oxygen necessary for growth and development.

  6. Carbon Dioxide Removal: Carbon dioxide, which is produced as a waste product by the baby's cells, is carried away from the baby's body through the umbilical cord and placenta into the mother's bloodstream.

  7. Waste Elimination: The mother's body, not the baby's, removes waste products, including carbon dioxide, through her own lungs and kidneys.

It's important to note that while the baby's lungs do develop in the womb, they are not used for breathing until after birth. Instead, the fetal circulatory system allows the baby to receive oxygen and eliminate waste products without the need for lung function. When the baby is born and takes its first breath, the fetal circulatory system undergoes significant changes to adapt to the new breathing environment, and the baby's lungs start functioning.


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