Hypoxia and Oxygen Transport — Flashcards

Flashcard 1: At _____ altitude the partial pressure gradient of O2 is lower and thus equilibration takes longer

Answer: high

Flashcard 2: Exercise adaptation at high altitudes:_____ pH inhibits brain stem and reduces maximal exercise effort

Answer: Increased

Flashcard 3: Exercise adaptation at high altitudes:At high altitudes, exercise capacity is hinderd by _____ in total O2 available

Answer: fall

Flashcard 4: High altitude initially causes _____ alkalosis and hypoxia, which may cause acute altitude sickness

Answer: respiratory

Flashcard 5: ascent should not be > _____ meters/day to avoid mountain sickness

Answer: 300

Extra: To prevent Acute Mountain Sickness (AMS), it is recommended that once above 3,000 meters, the sleeping altitude should not increase by more than 300 meters (1,000 feet) per day, with a rest day every 1,000 meters.

Flashcard 6: mountain sickness is seen in altitudes of >_____ meters

Answer: 2500

Extra: 

Flashcard 7: In response to high altitude, there is chronic hypoxic pulmonary vasoconstriction which results in pulmonary _____ and RV hypertrophy

Answer: hypertension

Flashcard 8: Exercise adaptation at high altitudes:_____ in pulmonary ventilation upon rising to a high altitude* blows off large quantities of CO2, reducing the PCO2

Answer: Increase

Flashcard 9: Exercise adaptation at high altitudes:To make up for the respiratory alkalosis, kidneys _____ hydrogen ion secretion and increase bicarbonate excretion.

Answer: reduce

Flashcard 10: Gas emboli occur due to bubbling of _____ out of blood, due to rapid ascent by a diver

Answer: nitrogen gas