196 



CIECULATION 



monary arteries convey the blood from the right ventricle 

 directly to the lungs. In the many capillaries, into which 



Fig. 74 — Diagram of the circulatory system. 



the branches of the pulmonary artery divide in the lungs, 

 the blood takes on a new supply of oxygen and loses its 

 carbon dioxide. These capillaries are collected into larger 



