Chapter 6.2 - Exam Review

Question 1

The Atmosphere consists mainly of (78%/21%) Oxygen and (78%/21%) Nitrogen?

Answer 1

• 21% Oxygen.

- 78% Nitrogen.

Question 2

Temperature and Pressure both (increase/decrease) with Altitude?

Answer 2

Decrease.

Question 3

In the ISA, what is the Atmospheric Pressure (in mm Hg) at sea level and at 18,000 feet?

Answer 3

• 760 mm Hg.

- 380 mm Hg.

Question 4

The oxygen-carrying pigment found in (red/white) blood cells is called Haemoglobin?

Answer 4

Red.

Question 5

The condition resulting from Oxygen Starvation is called (Hyperventilation/Hypoxia)?

Answer 5

Hypoxia.

Question 6

Hypoxia is caused by the (increase/reduction) in the Partial Pressure of Oxygen in the Alveoli as Altitude is increased?

Answer 6

Reduction.

Question 7

The common early symptoms of Hypoxia are similar to those of mild alcohol intoxication. What are they?

Answer 7

• Lack self-criticism.
• Over-confidence.
• False Sense of Security.

Question 8

Blue colouration of the lips and fingernails and blurred vision are severe symptoms of (Hypoxia/Carbon Monoxide Poisoning)?

Answer 8

Hypoxia.

Question 9

True or False. Although it is not possible to predict the Altitude at which Hypoxia may occur, the symptoms are most marked above 10,000 feet an can develop much faster at higher Altitudes?

Answer 9

True.

Question 10

The effective performance time after rapid decompression at 20,000 feet is (2 minutes/5 minutes)?

Answer 10

5 minutes.

Question 11

On ascent, any gases trapped in the abdomen and bad teeth, will try and (contract/expand) under the influence of the (increased/decreased) Atmospheric Pressure?

Answer 11

• Expand.

- Decreased.

Question 12

How can pain in the teeth or abdomen caused by trapped gases on ascent be relieved (2)?

Answer 12

• Slowing the rate of ascent.

- Descending to a lower Altitude.

Question 13

Name two ways in which excess abdominal gas is produced?

Answer 13

• Swallowing Air.
• Eating gas-producing foods.
• Drinking carbonated drinks.

Question 14

At extremes of Altitude, (Carbon Dioxide/Nitrogen) in the body may come out of solution to form gas bubbles. What condition can occur if these gas bubbles form around the joints or muscles (2)?

Answer 14

• Nitrogen.

- The bends.

Question 15

After Scuba diving at depths up to 10 metres (30 feet), Pilot should not fly until they have rested for (4 hours/12 hours) at sea level?

Answer 15

4 hours.

Question 16

Pilots should not fly until they have rested for (4 hours/48 hours) at sea level after diving which requires decompression stops and is more than 4 hours duration?

Answer 16

48 hours.

Question 17

Our bodies require both food and (Oxygen/Carbon Dioxide) for energy?

Answer 17

Oxygen.

Question 18

Oxygen in the air is absorbed through the lungs and into the bloodstream where it binds to the (Haemoglobin/Carbon Dioxide) in the red blood cells, and in this form, is transported throughout the body?

Answer 18

Haemoglobin.

Question 19

The transfer of Oxygen through the walls of the Alveoli into the bloodstream depends mainly on the (Breathing Rate/Partial Pressure of Oxygen in the Alveoli)?

Answer 19

Partial Pressure of Oxygen in the Alveoli.

Question 20

The effects of Hypoxia on night vision take place at around (4,000 to 5,000 feet/8,000 to 10,000 feet)?

Answer 20

4,000 to 5,000 feet.

Question 21

A heavy smoker is (more/less) likely than a non-smoker to experience Hypoxia symptoms at Altitudes lower than 10,000 feet?

Answer 21

More.

Question 22

With a 10% Carbon Monoxide contamination of the blood, a heavy smoker at sea level is at an effective Altitude of (2,000 feet/12,000 feet)?

Answer 22

12,000 feet.

Question 23

If you are suffering from a head cold and the Eustachian Tube is blocked (or partly blocked) from mucus, a very likely result is severe pain in the middle ear during (ascent/descent)?

Answer 23

Descent.

Question 24

Sinus pain is more common and more intense during (ascent/descent)?

Answer 24

Descent.