MOTION OF THE HEART AND BLOOD 



structure of an artery, while the arteria venosa has 

 that of a vein ? Because really, in build, in function 

 and everything, the former is an artery, the latter a 

 vein, contrary to what is commonly believed.^' Why 

 has the pulmonary artery so large an opening? Be- 

 cause it carries much more blood than is needed for 

 the nourishment of the lungs. 



All these phenomena and many others noted in 

 dissecting, if correctly judged, seem clearly to illu- 

 strate and to confirm the truth announced in this 

 tract, and at the same time to refute popular opinion. 

 Certainly it would be hard to explain in any other 

 way why all these matters are so made and constituted 

 except in a manner conforming to my theory and to 

 what I have expounded. 



^' Since he so clearly points out the inconsistencies of the current 

 names, why did not Harvey rename these vessels? One may some- 

 times be too deferential to traditional authority. 



[13^1 



