Podcast
Questions and Answers
What is the role of arterial chemoreceptors in response to decreased PO2?
What is the role of arterial chemoreceptors in response to decreased PO2?
- Increased ventilation (correct)
- Decreased ventilation
- Temporary inhibition of respiratory center
- Gradual adjustment over days
What is the main effect of blowing off carbon dioxide (CO2) in the body?
What is the main effect of blowing off carbon dioxide (CO2) in the body?
- Acidosis
- Hypoxia
- Alkalosis (correct)
- Angiogenesis
What is the consequence of hypoxia at 18,000ft above sea level?
What is the consequence of hypoxia at 18,000ft above sea level?
- Mental proficiency falls to about 50%
- Twitching or seizures (correct)
- Increased RBC production
- Coma
What is the main role of hypoxia-inducible factors (HIFs) in response to low oxygen availability?
What is the main role of hypoxia-inducible factors (HIFs) in response to low oxygen availability?
How do kidneys respond to hypoxia?
How do kidneys respond to hypoxia?
What is the acute effect of hypoxia at 23,000ft above sea level in unacclimatized individuals?
What is the acute effect of hypoxia at 23,000ft above sea level in unacclimatized individuals?
What is the 'Ceiling' Altitude in the context of high-altitude acclimatization?
What is the 'Ceiling' Altitude in the context of high-altitude acclimatization?
What happens to PCO2 as altitude increases?
What happens to PCO2 as altitude increases?
Why does breathing pure oxygen allow a person to go higher in altitude safely?
Why does breathing pure oxygen allow a person to go higher in altitude safely?
What is the most abundant gas in the air?
What is the most abundant gas in the air?
At what altitude are you considered to be at the 'aviator ceiling'?
At what altitude are you considered to be at the 'aviator ceiling'?
Why does acclimatization occur at higher altitudes?
Why does acclimatization occur at higher altitudes?
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