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VASCULAR SYSTEM. 



L VASCULAR SYSTEM WITH RED BLOOD. 

 General Remarks upon the Circulation. 



Q. How is the circulation divided? 



/?. Into that conveying red, and that which circulates 

 black blood. 



Q. Where does the vascular system with red blood 

 commence? 



t#. It arises in the capillaries of the lungs, and ends in 

 the arterial terminals or capillaries throughout the body. 



Q. Where is the commencement and ending of the vas- 

 cular system with black blood ? 



t/2. It has its origin in the general capillary system, and 

 ends in the lungs. 



Q. What are the channels for conveying the red blood ? 



&. The pulmonary veins ; the left side of the heart and 

 arteries. 



Q. Is there one continued or general membrane in these 

 canals? 



/?. There is; the lining membrane is continued from 

 one capillary system to another. This membranous canal 

 is strengthened on the pulmonary veins by loose mem- 

 brane, in the heart by its fleshy walls, in the arteries by a 

 dense, fibrous, peculiar coat! 



Q. What are the channels for the system of black 

 blood? 



