Why Don't Marine Animals Get "The Bends"?

The video explores decompression sickness, commonly known as the bends, which poses a significant risk to divers due to pressure changes. It explains why marine animals like seals and whales rarely suffer from the bends, thanks to their unique physiological adaptations. These animals can collapse parts of their lungs and redirect blood flow to minimize gas absorption. While these adaptations help them avoid the bends, they also limit oxygen intake, which marine animals manage by storing more oxygen or tolerating lower levels. The video concludes that these adaptations are unlikely to be applicable to humans.

What is the primary cause of decompression sickness in divers?

• Increased water temperature

• Lack of oxygen in the blood

• Excessive carbon dioxide absorption

• Rapid decrease in pressure causing gas bubbles

How do marine animals like seals and whales minimize gas absorption during deep dives?

• By swimming faster

• By collapsing part of their lungs

• By increasing their heart rate

• By holding their breath longer

What is a ventilation perfusion mismatch?

• A condition where more blood flows to the lungs

• A decrease in heart rate

• A situation where less blood flows to areas with gas

• An increase in oxygen absorption

How do marine mammals compensate for reduced oxygen absorption due to lung adaptations?

• By reducing their metabolic rate

• By swimming at shallower depths

• By increasing their lung size

• By storing more oxygen in their bodies

Why is it unlikely that humans can adopt marine animals' adaptations to avoid the bends?

• Humans have a higher metabolic rate

• Humans do not dive as deep as marine animals

• Humans cannot control blood flow actively

• Humans have different lung structures