Respiratoru Physiology (2)

Question 1

What is the tidal volume and how much is it?

Answer 1

Normal breathing volume

500mL

Question 2

Answer 2

Question 3

What membrane covers the lungs?

Answer 3

Parietal pleural membrane

Question 4

What membrane covers the lungs at the deep level?

Answer 4

Visceral pleural membrane

Question 5

Answer 5

Question 6

What is the role of pleural fluid?

Answer 6

Lubrication of the visceral and parietal membrane to slide alongside each other

Sticks the visceral pleural membrane to the parietal pleural membrane

Question 7

What is the visceral membrane stuck to?

Answer 7

Lines outer surface of lungs

Question 8

What does the arsenal pleura stuc to?

Answer 8

Rib cage and diaphragm

Question 9

What is the intrapleural pressure?

Answer 9

-3mm Hg

Less than atmospheric pressure

Question 10

What creates the natural balance in the lungs?

Answer 10

1. Elastic recoil of the chest wall tries to pull chest wall outwards
2. Elastic recoil of lung creates an inward pull

Equilibrium

Question 11

What is pneumothorax?

Answer 11

the presence of air or gas in the cavity between the lungs and the chest wall, causing collapse of the lung.