Living Organisms 741 



Carotid Artery — --, 



Duct of 

 Cuvier 



Afferent Branchial 

 Arteries 



Truncus Arteriosus 

 — Bulbus Arteriosus 



Sinus Venosus- 



Sinus Venosus 



-Hepatic Vein 



Precaval Veins £^ 



arotld A. 



Systemic Arch 

 — ^Pulmonary A. 



Pulmonairy V, 



B 



Postcaval Vein 



Innominate A. 



Aorta 



Innominate A. 



Aorta— — ?? 





Precaval Veins 



Rr 



Postcaval Veln- 



\ \ Hepatic V. 

 \ Postcaval V. 



Left Subclavian A; 

 Left Carotid A, \ 



Pulmonary 

 Arteries 

 and Veins 



R.and L, Precaval Veins Innominate A 



R. Pulmonary Artery — 



Precaval Vein — 

 (Superior Vena Cava) 



Postcaval Vein 



(Inferior Vena Cava) 



■ Aortic Arch, 



Left Pulmonary A. 



|-Right Pulmonary Veins 

 } Left Pulmonary Veins 



Fig. 365. — Hearts and blood vessels of vertebrates (somewhat diagrammatic). 

 A, Fish (Pisces): B, frog (Amphibia); C, turtle (Reptilia) ; D, pigeon (Aves) ; 

 E, man (Mammalia). Arrows show direction of blood flow. A (within heart) 

 shows the auricle; V (within heart) shows the ventricle; R, right; L, left. A 

 (outside heart) shows an artery; V (outside heart) shows a vein. The terms 

 auricle and atrium (plural, atria) are sometimes used interchangeably. 



