ANATOMY OF THE HEART. 261 



L. h. indicates the lymphatics, which drain the tissues, and L. c. 

 the lacteals, which absorb from the stomach and intestines (I). 

 Although the blood enters the arteries by jerks, the motion 



FIG. 114. 



The Left Auricle and Ventricle opened and part of their walls removed to show their 

 cavities. (Allen Thomson.) 1. Right pulmonary vein cut short. 1'. Cavity of left 

 auricle. 3. Thick wall of left ventricle. 4. Portion of the same with papillary muscle 

 attached. 5, 5'. The other papillary muscles. 6. One segment of the mitral valve. 7. 

 In aorta is placed over the semilunar valves. 



through the capillaries is constant. The reason of this is, that 

 the arteries are constantly over-full, their elastic walls being dis- 



