C04 - The Atmosphere and Respiration Flashcards
What is the MSL Temperature?
+15°C.
What is the MSL Pressure (3)?
- 1013.25 hPa.
- 29.92 inHg.
- 760 mmHg.
What is the MSL Density?
1.225km/m³.
What is Dalton’s Law?
The Total Pressure is the sum of all pressures of each gas in the Atmosphere.
What is the formula of Dalton’s Law?
Total Air Pressure = P N2 + P O2 + P CO2 + P others + P H2O.
What is Henry’s Law?
The amount of gas dissolved is proportional to its Partial Pressure.
True or False. As Atmospheric Pressure drops, so too will the Partial Pressure of its constituent gases?
True.
As Altitude ‘____’, the amount of Oxygen absorbed into the blood stream will ‘____’ (2)?
- Increases.
- Decreases.
What is the minimum Partial Pressure of Oxygen in the Lungs required in an Aviation Environment?
55 mmHg.
At what Altitude can the effects of Partial Pressure below 55 mmHg occur?
12,000 ft.
By ‘____’, ‘____’ Oxygen is needed to maintain a Partial Pressure of Oxygen equivalent to that at sea level (2)?
- 33,700 ft.
- 100%.
At ‘____’, no amount of Oxygen (even at 100%) produces the minimum Partial Pressure of 55 mmHg?
40,000 ft.
What requirement of Oxygen is needed up to 10,000 ft?
No specific requirement.
What requirement of Oxygen is needed above 10,000 ft?
Supplemental Oxygen required.
What requirement of Oxygen is needed from 10,000 ft to 33,700 ft?
Increasing percentage of Oxygen required.
What requirement of Oxygen is needed from 33,700 ft to 40,000 ft?
100% Oxygen required.
What requirement of Oxygen is needed above 40,000 ft?
Pressurised 100% Oxygen required.
The Cabin Pressure is allowed to drop progressively to a value equivalent to an Altitude of about ‘____’ and no more than ‘____’ (2)?
- 6,000 ft.
- 8,000 ft.
Flight Crews are required to use supplemental oxygen if Cabin Pressure exceeds ‘____’ for ‘____’, or whenever the Cabin Altitude exceeds ‘____’ for ‘____’ (4)?
- 10,000 ft.
- 30 minutes or more.
- 13,000 ft.
- Any period of time.
What is Boyle’s Law?
The sum of pressure and volume of gas remains constant in an enclosed area.
According to Boyle’s Law, if Pressure increases, the volume must?
Decrease.
According to Boyle’s Law, if Pressure decreases, the volume must?
Increase.
What is Charles’ Law?
The volume of mass of gas is directly proportional to its Temperature at a constant Pressure.
‘____’ is a semi rigid tube about ‘____’ in diameter, held in shape by rings of ‘____’ (3)?
- Trachea.
- 1.8 cm.
- Cartilage.
The Trachea branches into two main ‘____’?
Bronchi.
Define Alveoli?
Small spherical bag-like structures grouped into clusters called Alveolar Sacks.