[RECALLS] Sec A Prelims Recalls - Environmental Flashcards
What is the main problem in aviation physiology?
Low oxygen in high altitude
Body compartment where nitrogen empty slowly:
Fat and joint
Exposure to low PO2 will stimulate ______ and ______
ventilation.
peripheral
increase
Natural acclimatization of people living in high altitude except:
Decrease chest size
True or False: Body fluids and solid compartments are resistant to compression
by increased external water pressure
True
A scuba diver ascends rapidly from 20ft depth. 15 mins on her
only dive of the day. Hazards include:
Neither air embolism nor DCS
At depth of 66ft air that enters lungs is:
3x
Chronic oxygen poisoning causes pulmonary disability. After only
about 12 hours of 1 atmosphere exposure, the following may
happen except:
Pulmonary consolidation
During the next few days in altitude, acclimatization occurs. There are mechanisms to cause slow increase in ventilation, which is not
correct?
Spillage of HCO3 into urine that leads to
osmotic dieresis and production of acidic urine
The following are the natural acclimatization of native human beings living in high altitude. Which is not true?
High ratio of ventilator capacity to body mass
There are several effects of altitude and low gas pressures on the human body as we ascend to higher altitudes. Which of the
following does not happen?
Water vapor pressure in
alveoli increases at high altitude.
A diver takes a closed compressed tank at 99ft seawater w/c he
does not breath into. Comparing the same tank at sealevel what is
the density and volume of tank( assume temp. is constant)….
Same
Type of decompression Syndrome that has chokes and
Staggers?
Type II
At sea level, barometric pressure is:
760 mmHg
Not an indication of hyperbaric oxygen therapy:
A. Clostridial myonecrosis
B. AGE
C. Multiple sclerosis
D. Osteomyelitis
C. Multiple sclerosis
