Structure Function Physio-Scharf

Question 1

Fick’s first law of diffusion

Answer 1

V(dot-gas) is proportional to A*D(P1-P2)/T

Question 2

How does gas flow in the conducting zone?

Answer 2

Bulk flow with lung expansion

Question 3

How does gas move in the respiratory zone?

Answer 3

By Brownian motion/Diffusion between alveoli and capillaries.

Question 4

How does flow relate to cross sectional area?

Answer 4

Flow=volume/time, velocity=flow/cross sectinoal area.

Question 5

What is the partial pressure of water at 37C?

Answer 5

47mmHg

Question 6

What is the dry gas pressure in the body?

Answer 6

713 mm Hg

Question 7

What is the PO2 in alveoli (PAO2)?

Answer 7

.21x713=149mmHg

Question 8

Henry’s law for dissolved gases

Answer 8

Content of gas in liquid=k*Pgas (Partial Pressure of gas k(oxygen)=.003)

Question 9

Boyle’s law for constant temperature

Answer 9

P1V1=P2V2