Chapter 4 / Athmosphere, O2 and Respiration

Question 1

Boyle’s law is :

And is associated with :

Answer 1

• pressure is inversely proportional with volume at constant temperature
• associated with Otis and Gastro-intestinal, barotrauma and aerodontologia

Question 2

Charles’ Law is :

Answer 2

Volume is proportional to temperature at constant pressure

Question 3

Gay-Lussac’s Law is :

Answer 3

Pressure is proportional to temperature at a constant volume

Question 4

What is the equation for combined gas law :

Answer 4

PV/T = k

Question 5

What is Dalton’s Law ?

Associated with ?

Answer 5

• It is the law of partial pressure. States that the total pressure of a gas mixture is the sum of its partial pressures
• associated with hypoxia and night vision

Question 6

What is Henry’s Law ?

Associated with ?

Answer 6

• The amount of gas in a liquid is proportional to the pressure exerted on it.
• associated with decompression sickness

Question 7

What is Fick’s Law ?

Associated with ?

Answer 7

• It is the law of (gases) diffusion (to cells)

- associated with external respiration

Question 8

What is the composition of atmosphere ?

Answer 8

> gases

• 78% nitrogen
• 21 % oxygen
• 0.93% argon
• 0.038% CO2
• 0.047% of other gases

> water vapour

Question 9

What are the ISA’s characteristics :

Answer 9

• mean sea level temperature of 15°c
• mean sea level pressure of 760mmHG
• mean sea level density of 1.225 kg/m3
• temperature lapse-rate : 1.98°c / 1000ft