Physiology(Respiratory System)

Question 1

Airflow(V)=?

Answer 1

(P alveoli -P atmosphere)/R resistance

Question 2

How much is saturated air’s water vapour pressure?

Answer 2

6.3kPa/47mmHg
(1kPa=7.5mmHg=102mmH2O)
1 kPa is roughly the pressure exerted by a 10-gram mass resting on a 1-centimeter area
A kilopascal (kPa) is a unit of pressure that is equal to 1,000 newtons per square meter.

Question 3

Laplace law in alveolus

Answer 3

∆P∞T/r
∆P=alveolar distancing pressure
T=surface tension
r=radius

Question 4

Reduced surfactant may cause what

Answer 4

Lung collapse