do all these take involve external respiration? and which ones don't or do they all?
1 hemoglobin binds to oxygen to form ox-hemoglobin
2 hemoglobin releases carbon dioxide
3 carbon dioxide diffuses into the alveoli
4 carbonic acid dissociates into water and carbon dioxide
5 exchange of gases between capillaries and alveoli
6 partial pressure of oxygen is greater in the alveoli than capillaries
7 involves the pulmonary circuit
8 oxygen diffuses into capillaries
FIRST ANSWER IS BEST! PLEASE HELP
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