HPL Q03 - the Atmosphere and Respiration Flashcards
The primary factor in controlling the rate and depth of breathing is the:
Select one:
-percentage of carbon dioxide in the blood.
-total air pressure in the blood.
-partial pressure of oxygen in the blood.
-partial pressure of nitrogen.
-percentage of carbon dioxide in the blood.
What is the time limit between a pilot going snorkelling and the beginning of his or her flight duty?
Select one:
a.48 hours.
b.There is no time limit.
c.24 hours.
d.12 hours.
b.There is no time limit.
What is the name of the tube, branching off from the trachea, that supplies each lung?
Select one:
-Pharynx.
-Bronchus.
-Larynx.
-Throat.
-Bronchus.
What happens to the volume percentages of the gases in ambient air as altitude increase?
Select one:
-Decrease.
-Remain constant
-Increase then decrease
-Increase
-Remain constant
What is the name of the small sac like structures responsible for diffusing gases into and out of the blood?
Select one:
-Alveoli.
-Vagus Nerves.
-Bronchi.
-Phrenic Nerves.
-Alveoli.
During a steady climb above FL100, if cabin pressurisation fails, the:
Select one:
a.Cabin will cool rapidly.
b.Cabin altitude will descend.
c.Effects of Hypoxia may be gradual and difficult to recognise.
d.Onset of anaemia causes hyperventilation.
c.Effects of Hypoxia may be gradual and difficult to recognise.
Some hours after a rapid decompression at FL 300 you experience pain in the joints. Which of following answers is correct?
Select one:
-You should ask for medical advice (flight surgeon) since this is a symptom of decompression sickness.
-This phenomenon is treated by breathing 100% nitrogen.
-This symptom indicates decompression sickness and will disappear when you take some exercise.
-This phenomenon is treated by physiotherapy.
-You should ask for medical advice (flight surgeon) since this is a symptom of decompression sickness.
The critical threshold for oxygen deprivation is?
Select one:
a.24,000 feet.
b.5000 feet.
c.10,000 feet.
d.20,000 feet.
d.20,000 feet.
After a rapid decompression at 35 000 feet, the time of useful consciousness is about:
Select one:
-30 to 60 seconds
-5 minutes.
-15 seconds or less
-10 minutes.
-30 to 60 seconds
Factors that determine the severity of hypoxia include:
Select one:
a.Hunger, fatigue, smoking.
b.Altitude, Rate of decompression, Extremes of temperature.
c.Race, Heat, Presbycusis.
d.Attitude, Flight time, Hydration.
b.Altitude, Rate of decompression, Extremes of temperature.
Adverse effects of carbon monoxide increase as:
Select one:
-altitude decreases
-altitude increases
-air pressure increases
-relative humidity decreases
-altitude increases
What is external respiration?
Select one:
-Breathing out at the mouth.
-Breathing in at the mouth.
-In each alveolus, oxygen diffuses out of the alveolus from the blood stream, and carbon dioxide diffuses into the blood stream out of the alveolus.
-In each alveolus, oxygen diffuses from the alveolus into the blood stream, and carbon dioxide diffuses out of the blood stream into the alvelous, and is then expelled from the lungs.
-In each alveolus, oxygen diffuses from the alveolus into the blood stream, and carbon dioxide diffuses out of the blood stream into the alvelous, and is then expelled from the lungs.
The symptoms caused by gas bubbles under the skin following a decompression are called:
Select one:
-creeps
-leans
-bends
-chokes
-creeps
Flying immediately following a dive with SCUBA diving equipment to a depth greater than 10 metres is not advisable because:
Select one:
-has no influence on altitude flights
-can cause decompression sickness even when flying at pressure altitudes below 18 000 FT
-will always lead to hypoxia
-prevents any dangers caused by DCS (decompression sickness) when climbing to altitudes not exceeding 30 000 FT
-can cause decompression sickness even when flying at pressure altitudes below 18 000 FT
What and how much is the Tidal Volume of the lung?
Select one:
-Is the amount of air that can be still exhaled by forceful expiration.
-Is the extra volume of air that can be inhaled.
-Is the volume of air remaining in the lungs even after the most forceful expiration.
-It is the volume of air inhaled and exhaled with each normal breath and amounts to about 500 ml. in the normal male adult.
-It is the volume of air inhaled and exhaled with each normal breath and amounts to about 500 ml. in the normal male adult.
