What is the First Line of Defense Against Hypoxia During

Question

What is the first line of defense against hypoxia during deep dives?
A) rapid ascent
B) mammalian diving reflex
C) pre-dive voluntary hyperventilation
D) rapid descent

Accepted Answer

The mammalian diving reflex optimizes respiration to allow mammals to stay underwater for extended periods. It involves physiological adjustments such as reduced heart rate and redistribution of blood flow to prioritize oxygen supply to vital organs like the brain and heart.