THE CIRCULATION 



53 



FIG. 23. General scheme of the circulation, showing 

 places where the blood takes on and gives off materials. 

 I. Body in general. 2. Lungs. 3. Kidneys. 4. Liver. 

 5. Organs of digestion. 6. Lymph ducts. 7. Pulmonary 

 artery. 8. Aorta. 



