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Aerospace Medicine Quiz

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Aerospace Medicine Quiz
Non Peer-Reviewed Content

Aerospace Medicine Quiz

Compiled by: Ruchika Rana, Institute of Aerospace Medicine, Indian Air Force, Bengaluru, Karnataka, India. E-mail:
This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-Share Alike 4.0 License, which allows others to remix, transform, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.

  1. Critical minimum value of mitochondrial pO2 required is

    1. 0.8–2 mm Hg

    2. 2–5 mm Hg

    3. 0.5–3 mm Hg

    4. 3–5 mm Hg

  2. In the brain, loss of function occurs within how much time of sudden loss of O2 supply

    1. 10–16s

    2. 5–8s

    3. 15–20s

    4. 40–45s

  3. Vital capacity of the lung is

    1. FRC+TV

    2. TLC-FRC

    3. FRC-RV

    4. TLC-RV

  4. Phrenic nerve roots are

    1. C4, C5, C6

    2. C2, C3, C4

    3. C3, C4, C5

    4. None of the above

  5. At rest, breathing air at sea level, after how much time the pO2 of alveolar gas and blood in pulmonary capillaries become equal.

    1. 0.25s

    2. 0.50s

    3. 0.75s

    4. 1s

  6. Solubility of O2 in blood in ml/L blood/mm Hg

    1. 0.3

    2. 0.03

    3. 0.003

    4. 0.0003

  7. “Clo” value is use for measurement of

    1. Clothing insulation

    2. Wind velocity

    3. Radiant heat

    4. Humidity

    5. None of the above

  8. According to FITS, caution zone lies between

    1. 30–32°C

    2. 32–36°C

    3. 32–38°C

    4. 36–38°C

    5. 38–40°C

  9. Loss of sensation occurs in which degree of frostbite

    1. Third degree

    2. First degree

    3. Second degree

    4. Fourth degree

  10. For each cm above heart level, pressure within artery is reduced by

    1. 0.68 mm Hg

    2. 0.78 mm Hg

    3. 0.87 mm Hg

    4. None of the above

  11. Baroreceptors are located inside

    1. Aortic arch and carotid body

    2. Aortic body and carotid sinus

    3. Aortic arch and carotid sinus

    4. None of the above

  12. The following points regarding Haldane effect are correct, except

    1. Occurs at tissue level

    2. Occurs at the level of lungs

    3. Release of O2

    4. Release of CO2

  13. During continuous PPB, which of the following decreases

    1. ERV

    2. IRV

    3. RV

    4. All of the above

  14. Physiological requirements of oxygen system is/are

    1. Appropriate temperature

    2. Minimal resistance

    3. Disposal of expirate

    4. Safety pressure

  15. The relationship between resistance(R) and radius(r) of airway is

    1. R α r2

    2. R α r4

    3. R α 1/r3

    4. R α 1/r4

Answers for Aerospace Medicine Quiz

Ans.: 1. (c), 2. (b), 3. (d), 4. (c), 5. (a), 6. (b), 7. (a), 8. (c), 9. (a), 10. (b), 11. (c), 12. (a) and (c), 13. (b), 14. (b) and (c), 15. (d).

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