BT_PO 1.10 Describe the properties of surfactant and its role in respiratory mechanics

Sunset last night, Hamilton Island

This is the LO number that the work of breathing post from yesterday was given by mistake, so surfactant fell through the gaps…

I am sure you would find the answers to these in either West or Nunn’s (Lumb) books. I used Nunn because I am still on holidays.

BT_PO 1.10 Surfactant properties and role in respiratory mechanics
Surface tension in the alveoli is reduced by the presence of surfactant T/F

Surfactant ensures that surface tension is equal throughout the lung T/F

Surfactant release is stimulated by high volume lung inflation T/F

Surfactant plays a role in keeping the alveoli free from transudate T/F

Surfactant has an important immunological function in the lung T/F

Why is surfactant important in preventing collapse of small alveoli? Which physical law determines pressure within a sphere? If you do a little mathematical equation looking an pressure within an alveolus with a 0.1mm sphere and one with a 0.2mm sphere assuming equal surface tension, you will be able to work out the answer to the second statement.

Again my best wishes for those of you with vivas today