Air Pathway
First place air enters
What is the nasal cavity?
Number of lobes in right lung
What is 3?
Cells that carry oxygen
What are red blood cells?
Waste gas produced by cells
What is carbon dioxide?
Average breathing rate per minute
What is about 14 breaths?
Passage behind nose and mouth
What is the pharynx?
Number of lobes in left lung
What is 2?
Protein in RBCs that binds oxygen
What is hemoglobin?
% of CO₂ carried in plasma
What is 9%?
Why breathing increases during exercise
What is more oxygen needed and more CO₂ produced?
Tube leading to lungs
What is the trachea?
Why left lung has fewer lobes
What is space for the heart?
What low iron causes
What is anemia?
% of CO₂ bound to hemoglobin
What is 27%?
What hyperventilation does to CO₂
What is decreases it?
Two branches that enter lungs
What are bronchi?
Membrane surrounding lungs
What are pleural membranes?
Where oxygen diffuses after alveoli
What is into the blood plasma?
% of CO₂ as bicarbonate
What is 64%?
Why hyperventilation lets you hold breath longer
What is CO₂ takes longer to build up?
Final destination where gas exchange happens
What are alveoli?
Function of pleural fluid
What is reduce friction?
What happens to oxygen in tissues
What is it diffuses into cells?
Form CO₂ mainly travels in blood
What is bicarbonate ions?
Condition where lung collapses due to air in pleural space
What is pneumothorax?