38 



ANATOMY. 



axillary near the division of the anterior aorta into right anc 

 left axillary arteries. 



A corpuscle, on its way from the heart to the brain would 

 pas5 through the aorta, anterior aorta, right axillary, cephalic, and 

 common carotid and then through a branch of the carotid to the 

 brain. 



FIG. 19. CIRCULATION. ARTERIES GRAY, VEINS WHITE. 

 1. Ilpart. riRht ventricle; 2, hft \( utricle; 3, left auricle; 4, inilmotifiry 

 artery; 5, pulmonaiy veins; 6. anterioi- aorta; 7, carotid artery; 9, left axillary 

 artery; 13, humeral artery; 14, raclial artery; 15, metacarpal artery; 16, digi- 

 tal artery; 17, posterior aorta; 18, coeliac trnnk; 19, mesenteric trunk; 20, 

 renal (kidney) artery; 22, posterior vena cava (vein); 33, portal vein; 24, ex- 

 ternal iliac artery; 25, internal iliac artery; 27, femoral artery: 28, .osterior 

 tibial artery; 29, metarsal artery; 30, venous supply to the foot; 33, jugular 

 vein. 



Posterior aorta curves upward and backward, through the 

 diaphragm, then under the bodies of the dorsal and lumbar verte- 

 brae to the lumbo-sacral articulation. This large artery supplies 

 blood to the thoracic and abdominal organs, and then terminates 

 in four branches named illiacs; two external and two internal. 



The two external illiacs correspond somewhat to the two ax- 

 illarics in front and the two femoral arteries to the two humeral, 

 for it is the femoral arteries which continue the external illiacs 

 and distribute blood to the posterior limbs and feet. 



