ANATOMY AND PHYSIOLOGY. 



245 



tory. These are not only related by position, but are mutu- 

 ally dependent on each other for their action. Thus, if severe 

 disease affect the heart, the lungs are very apt by imperfectly 

 or irregularly performing their offices, to show their sym- 

 pathy. In like manner, if the lungs exhibit disease, 

 sooner or later the heart is sure to manifest its sympathy 

 with its suffering neighbors. 



436 The Lungs, their Shape, their Color, Lobes of 

 the Right Lung, Capacity of the Right Lung, Amount of 



Fig. 247. 



A View of the Bronchia and Blood-Vessels of the Lungs as shown by Dissection, 

 as well as the relative Position of the Lungs to the Heart. 1, End of the Left Au- 

 ricle of the Heart. 2, The Eight Auricle? 3, The Left Ventricle with its Vessels. 

 4, The Eight Ventricle with its Vessels. 5, The Pulmonary Artery. 6, Arch of the 

 Aorta. 7, Superior Vena Cava. 8, Arteria Innominata, 9, Left Primitive Carotid 

 Artery. 10, Left Sub-Clavian Artery, 11, The Trachea. 12, The Larynx. 13, Up 

 per Lobe of the Ei<rht Lung. 14, Upper Lobe of the Left Lung. 15, Trunk of the 

 Eight Pulmonary Artery. 16, Lower Lobes of the Lungs. The Distribution of the 

 Bronchia and of the Arteries and Veins, as well as some of the Air-Cells of the Lungs, 

 are also shown in this dissection. 



