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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
saponin is not a dye rather it is a surfactant produced by plant.
A fetus.
No, weed is not good for a growing fetus.
the placenta
In the event of surfactant absence in the lungs they would collapse and pulminary functioning would be reduced dramatically. Surfactants are critical in maintaining proper lung function by reducing surface tension and making it easier to breathe.