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309 Flight Physiology > Final > Flashcards

Final Flashcards

1
Q

What are the different METHODS of pressurization?

A
  • Isobaric Control

- Isobaric Differential

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2
Q

What are the different TYPES of pressurization systems?

A
  • Sealed Cabins

- Pressurized Cabins

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3
Q

What are some advantages of pressurization systems?

A
  • Protection

- Comfort

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4
Q

What are some disadvantages of pressurization systems?

A
  • Heavy
  • Expensive
  • Risk of decompression
  • Risk of air contamination
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5
Q

What factors control the rate of decompression

A
  • Size of cabin (smaller = faster)
  • Size of opening (larger = faster)
  • Pressure differential (greater = faster)
  • Flight altitude (higher = faster)
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6
Q

What does a pressurization system do to the environment within the cabin?

A

Keeps cabin atmosphere at a higher pressure (therefore a LOWER PRESSURE ALTITUDE) than the flight altitude of the a/c

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7
Q

What are 2 PHYSIOLOGICAL effects of a rapid decompression?

A
  • Hypoxia

- Evolved gas sickness (DCS)

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8
Q

What method of pressurization keeps the a/c cabin at one constant altitude during flight?

A

Isobaric CONTROL

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9
Q

What method of pressurization allows for the a/c cabin altitude to vary with changing flight altitude?

A

Isobaric DIFFERENTIAL

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10
Q

Popping of the ears and mild hypoxia are signs of what type of decompression?

A

Slow!

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11
Q

Hypoxia and DSC are signs of what type of decompression?

A

Rapid!

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12
Q

What type of decompression occurs in 1-10 seconds?

A

Rapid!

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13
Q

What type of decompression occurs in 5 seconds or less, or less than 1 second with a 10 psi change?

A

Explosive!

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14
Q

What type of pressurization system carries its own gases that are continually purified and recirculated in proper proportion to provide the necessary pressure and gaseous environment?

A

Sealed Cabin system!

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15
Q

What type of system is based off the forcing of ambient air into the cabin?

A

Pressurized Cabin system!

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16
Q

What are the PHYSICAL hazards of an RD?

A
  • Flying debris
  • Windblast
  • Noise
  • Dust/condensation
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17
Q

What is the most essential aid to a person in a survival situation?

A

Attitude! Having the will to live and making your own luck.

18
Q

Fear, anxiety, loneliness and frustration are examples of what type Survival Stress?

A

PSYCHOlogical stress

19
Q

Fast pulse, trembling, faintness, perspiration and pupil dilation are what types of response to fear?

A

PHYSIOlogical symptoms of fear

20
Q

Admitting fear is present is a method of controlling:

A

Fear

21
Q

Fatigue, thirst, exposure and injury are examples of what type of Survival Stress?

A

PHYSIOlogical stress

22
Q

Hostility, confusion, loss of concentration and panic are what types of response to fear?

A

PSYCHOlogical symptoms of fear

23
Q

Thinking and planning logically is a method of controlling:

A

Fear

24
Q

Being prepared is a method of controlling:

A

Fear

25
Q

Keeping busy is a method of controlling:

A

Fear

26
Q

What are 4 major things you can do to manage PANIC?

A
  1. Tactical Breathing
  2. Visualize emergencies to prepare the body
  3. Take yourself through it
  4. Stay outwardly focues on the task at hand
27
Q

What is fear?

A
  • An emotional response to danger

- Triggers the fight or flight instinct

28
Q

What are the 5 critical survival needs?

A
  1. Signaling
  2. Shelter
  3. Water
  4. Fire
  5. Food
29
Q

The body’s ability to naturally adapt to the environment is a mechanism of:

A

Temperature regulation (human thermoregulation)

30
Q

What are the 3 ways heat is transferred?

A

Conduction
Convection
Radiation

31
Q

Heat stress and cold exposure affect human physiology and performance through altered:

A
  • Motivation, dexterity and endurance

- Metabolism

32
Q

Heat transfer through solid materials contacting the body is an example of:

A

Conduction

33
Q

Heat transfer through air or water currents is an example of:

A

Convection

34
Q

Heat transfer through emissions such as a source of light are examples of:

A

Radiation

35
Q

The most sensitive organ to altered temperatures is:

A

The brain

36
Q

What are 2 normal heat regulation processes of humans?

A
  1. Increase skin circulation

2. Increase sweat production and evaporation

37
Q

Describe the medical treatments for HEAT induced illnesses

A
  • Replenish fluids with warmer liquids (dehydration)

- Aggressive cooling (heat stroke)

38
Q

Decreased alertness, memory, motivation and work capacity are ways that _____ affects human performance

A

FATIGUE!

39
Q

FATIGUE will especially impair your:

A

Assessment capabilities (can lead to non-adherence)

40
Q

What are some ways to prevent fatigue?

A
  1. Optimizing sleep

2. Using caffeine in moderation (100mg or less)

309 Flight Physiology (3 decks)

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