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6. the respiatory rate of a 5-11 year old is 30-35
7. the narrowest part of the airway on an adult is the cricoid ring
8. the visceral pleura covers the chest wall
9. Cells need 4 things in order to live
11. the trachea is 10-11cm long ?
12. the pons sends messages to the diapraghm to contract
13. airway resistance can be described as any condition or environment that obstructs the blood flow to your lungs
14. the trachea is made of 16-20 c shaped rings
15. Oxygen makes up 78% of inspired air
16. in the alveoli external respiration takes place
17. The pharynx is 10-11cm long
18. during an increased rate of breathing only the intercostal muscles and the diapraghm are used
19. Internal respiration involves movement of o2 from bloodstream to cells and tissues
20. the inner layer of the trachea is made up of fibrous tissue