Surface Tension and Surfactant: In a Nutshell (Nursing)

by Rhonda Lawes

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    00:01 So, let's wrap up this video series.

    00:03 Surfactant is made by Type II alveolar cells and lines the inside of the alveolus.

    00:09 Surface tension is the tendency of liquids to shrink to the minimum surface area possible.

    00:15 The alveoli is lying with a layer of water that allows oxygen to be dissolved and diffused more quickly into the bloodstream.

    00:23 Now, water has a relatively high surface tension which if left uncheck would produce a force that would cause the alveolus to collapse.

    00:32 So, pulmonary surfactant is that mixture of phospholipids and it lowers surface tension caused by the water in the alveoli.

    00:40 Surfactant inserts itself like, here it is, right on our nutshell slide. Surfactant is pushy.

    00:46 and it inserts itself in between the water molecules and disrupts the water's ability to bind with each other.

    00:53 Surfactant is what allows the alveoli to avoid collapsing and increases lung tissue and compliance.

    01:01 Thank you for watching our video today.

    About the Lecture

    The lecture Surface Tension and Surfactant: In a Nutshell (Nursing) by Rhonda Lawes is from the course Acute Respiratory Distress Syndrome (ARDS) (Nursing) (quiz coming soon).

    Author of lecture Surface Tension and Surfactant: In a Nutshell (Nursing)

     Rhonda Lawes

    Rhonda Lawes

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