Biology of Man 481 



left) receive blood from the face and scalp (regions supplied by the ex- 

 ternal carotid artery) and empty into the subclavians just before sub- 

 clavian and internal jugular unite to form the innominate. The veins 

 of the upper extremity enter the subclavian vein. The deep veins of the 

 upper extremity accompany the corresponding arteries and have the 

 same names: axillary, brachial, radial, and ulnar veins. The superficial 

 veins of the upper extremity are (1) cephalic, (2) basilic, and (3) 

 median. All arise from the dorsal part of the hand: the cephalic runs 



"Veins from uppcp. 

 part of Body 



lA/mpf»atic5 - 



Thoracic duct 



^upcriop vena cava-t- /- /'^v^ '^^ 



'Pulmonary artery -j — 



W 



"Ri^fit aupiclc 

 Infepiop vena cava- 



1Si<^ht vcntpiclc 

 I^actcab — 



Mcpalic vein, 



Vcias from lower 

 part of Body 



ApIcpIcs to uppe^ 

 papt of Body 



Pulmonapy vein 



L^mpBaticj 



- Left ycntpicle 



ArtcpiGS to lov/Gf» 

 pari of Body 



Fig. 240. — Diagram of circulation in a mammal. Only the general courses of 

 circulation are shown diagrammatically. Arrows show the direction of blood 

 flow. Oxygenated blood is shown in black; venous blood in white. The lym- 

 phatics are the black irregular lines. (See Figs. 237-239 and 241.) (From Mc- 

 Clendon and Pettibone: Physiological Chemistry, The C. V. Mosby Go.) 



