when did new born hydra start its independent life ?
Answers
The mother's placenta helps the baby "breathe" while it is growing in the womb. Oxygen and carbon dioxide flow through the blood in the placenta. Most of it goes to the heart and flows through the baby's body.
At birth, the baby's lungs are filled with fluid. They are not inflated. The baby takes the first breath within about 10 seconds after delivery. This breath sounds like a gasp, as the newborn's central nervous system reacts to the sudden change in temperature and environment.
Once the baby takes the first breath, a number of changes occur in the infant's lungs and circulatory system:
Increased oxygen in the lungs causes a decrease in blood flow resistance to the lungs.
Blood flow resistance of the baby's blood vessels also increases.
Fluid drains or is absorbed from the respiratory system.
The lungs inflate and begin working on their own, moving oxygen into the bloodstream and removing carbon dioxide by breathing out (exhalation).
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