What changes occur at the time of birth?
Answers
What changes occur at the time of birth?
With birth, a change from parallel flow through the heart to a serial one gradually takes place.
The following changes must occur: The gas exchange takes place in the baby's lungs.
By cutting the umbilical cord, the placental circulation system is switched off.
Explanation:
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).