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OUR BODIES AND HOW WE LIVE 



Experiment 51. To show how the lungs may be filled with air. 

 Take the lungs saved from Experiment 50. Tie a glass tube six 

 inches long into the larynx. Attach a piece of rubber tubing to one 

 end of the glass tube. Now inflate the lungs by blowing through 

 the rubber tube several times and let them collapse. 



FIG. 103. Relative Position of the Lungs, the Heart, and Some of 

 the Great Vessels belonging to the Latter. (Posterior view.) 



A, left common carotid artery ; B, external carotid artery ; C, internal carotid 

 artery ; D, left jugular vein ; E, sterno-cleido muscle ; F, right innominate 

 artery with branches to head and arm -, G, left subclavian artery ; H, great 

 azygos vein ; A", thoracic duct. 



