between 28 and 30 weeks
The lung surfactant is a substance that coats the internal surfaces of the alveoli (air sacks) of the lungs and prevents them from sticking together in the deflated state when the baby exhales. If the infant is born before it produces lung surfactant, then the alveoli will be unable to be filled with air and the baby will suffocate.
Am pretty sure its called the pulmonary surfactant that's produced from the lungs
type II alveolar cells
penis
Yes, especially if the mother has not been managing to eat enough. The fetus does go through phases of growing and not growing
what is the name of the liquid layer that lines the alveoli
A fetus.
No, weed is not good for a growing fetus.
To hold the growing fetus .
The fetus is what they call the unborn baby after 3 months of growing in the uterus. At that time it is now considered an unborn child or fetus instead of a blacocyst or mass growth of cells.
To hold the growing fetus .