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Human Performance And Limitations > Atmosphere, Oxygen And Respiration > Flashcards

Atmosphere, Oxygen And Respiration Flashcards

1
Q

What is another name for your voice box?

A

Larynx.

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2
Q

What prevent food from travelling into your wind pipes?

A

Pharynx.

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3
Q

What muscles are next to your ribs?

A

Inter costal muscles.

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4
Q

Whats the name of your normal breathing volume and what is this value?

A

Tidal volume (500ml).

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5
Q

What is the residual volume within your lungs and how much is it?

A

The amount of air needed to keep the lungs inflated (1200ml)

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6
Q

Healthy people are usually capable of compensating for a lack of oxygen up to what altitude?

A

10,000ft

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7
Q

At rest the cardiac output (the quantity of blood the heart pumps in one minute) of an adult is approximately what?

A

5ltrs in 1 min

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8
Q

What is respiration rate cause by?

A

CO2 levels.

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9
Q

When CO2 meets H2O, what happens?

A

Carbonic acid is made.

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10
Q

How does out body remove carbonic acid?

A

Increase respiration rates.

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11
Q

What is the normal amount of breaths per minute?

A

16 breaths per minute.

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12
Q

What does Ficks law describe in the lung?

A

Diffusion.

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13
Q

What is hypoxia?

A

Insufficient oxygen

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14
Q

When does hypoxic hypoxia occur?

A

High altitude.

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15
Q

What is anemic hypoxia / hynemic hypoxia?

A

Lack of iron in the blood.

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16
Q

What causes stagnast hypoxia?

A

Circulatory issues.

17
Q

What causes histotoxic hypoxia?

A

Drugs/ alcohol/ smoking.

18
Q

At 20,000ft, what are your haemoglobin % levels?

A

65%.

19
Q

What is cyanosis and what does it indicate?

A

Skin going blue - hypoxia.

20
Q

At what level can night vision be affected?

A

5,000ft.

21
Q

At 33,700ft, blank % of blank is the same as sealevel levels.

A

100% oxygen.

22
Q

Between what altitudes does a partial compensatory stage occur in which there is an increase in breathing rate as well as a degradation in the nervous system?

A

12,000 - 20,000ft.

23
Q

Above 22,000ft, with out oxygen, what happens to the human body?

A

It becomes incapacitated.

24
Q

What is the effective performance time at FL400?

A

15-30 seconds.

25
Q

What is the effective performance time at FL350?

A

30-90 second.

26
Q

What is the effective performance time at FL300?

A

1-2minutes.

27
Q

What is the effective performance time at FL200?

A

30minutes.

28
Q

What is the average PH of human blood?

A

7.4

29
Q

What two techniques can help stop hyperventilation?

A

Talking loudly and breathing into a bag.

30
Q

Above 40 000 ft the EPT is approximately blank seconds.

A

5-6

31
Q

During hyperventilation the blood goes more acidic/alkaline.

A

Alkali

32
Q

From

A

Human Performance And Limitations (10 decks)

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