So, let's wrap up this video series.
Surfactant is made by Type II alveolar cells and lines the inside of the alveolus.
Surface tension is the tendency of liquids to shrink to the minimum surface area possible.
The alveoli is lying with a layer of water that allows oxygen to be dissolved
and diffused more quickly into the bloodstream.
Now, water has a relatively high surface tension
which if left uncheck would produce a force that would cause the alveolus to collapse.
So, pulmonary surfactant is that mixture of phospholipids
and it lowers surface tension caused by the water in the alveoli.
Surfactant inserts itself like, here it is, right on our nutshell slide. Surfactant is pushy.
and it inserts itself in between the water molecules
and disrupts the water's ability to bind with each other.
Surfactant is what allows the alveoli to avoid collapsing
and increases lung tissue and compliance.
Thank you for watching our video today.