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It defuses throught the respiratory membrane and binds to hemoglobin (in humans) following a hemoglobin type-specific binding affinity curve (depending on the Po2 of the local atmosphere.)

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Q: What happens to an oxygen gas when it reaches an alveolus?
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What are two gases that enter and exit from the alveolus?

It is carbon dioxide which is collected from different organs of the body by blood


What is gas exchange in the lungs?

The process in which oxygen enters the bloodstream through the alveolus and carbon dioxide exits the bloodstream also through the same alveolus to be exhaled.


What is the difference between alveolus of the lung and the bronchus of the lung?

The bronchus of a lung is the tubes leading up to the alveolus of the lung. The alveolus of a lung is the small air sacs at the end of the bronchi (bronchus). The alveoli is where the gas exchange of oxygen and carbon dioxide takes place.


What gas bursts into flame when it reaches oxygen?

air will burst into flame in pure oxygen


What happens when a gas reaches its lowest temperature?

The molecules of the gas will stop moving.


What happens when a liquid reaches its boiling boint?

It turns into gas


Where does the majority of gas exchange occur?

the alveolus


What happens when gas reaches its lowest possible temperature?

it settles down


What happens to a gas when it reaches the condensing point?

It undergoes a phase change, and turns to liquid.


What happens to a gas when it reaches it condensation point?

It undergoes a phase change, and turns to liquid.


People living at high altitudes have thicker blood so that what gas reaches body cells?

oxygen


Where gas exchange happens in the lungs?

Gas exchange happens in the capillaries. Oxygen is replaced with Carbon Dioxide which is transported from the heart.