Describe the three distinct parts of the respiration process.
What will be an ideal response?
1. Ventilation
• flow of air between the outside environment and the lungs
• inhalation is the flow of air into the lungs; brings in fresh oxygen
• exhalation is the flow of air out of the lungs; removes carbon dioxide
2. External respiration
• exchange of oxygen for carbon dioxide in the lungs
• oxygen moves out of the air sacs and into the bloodstream
• carbon dioxide moves out of the bloodstream and into the air sacs
3. Internal respiration
• exchange of oxygen for carbon dioxide at the tissue level
• oxygen leaves the bloodstream and enters the tissue
• carbon dioxide leaves the tissue and enters the bloodstream
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Fill in the blank(s) with correct word
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