Thorax 
Figure 4-19: Schematic drawing of heart and lungs of 1-year-old male European 
hamster. Pulmonary artery cut through and left cranial vena cava removed. a = 
ventriculus dexter; b = ventriculus sinister; c^auricula sinistra; d = trachea; e = pul- 
mo sinister; f = lobus accessorius (pulmo dexter); g = esophagus; l = arcus aortae; 
2=truncus brachiocephalicus; 3 = a. subclavia dextra; 4 = a. carotis communis dex- 
tra; b — a. carotis communis sinistra; 6 = a. subclavia sinistra; 7 = aorta descendens; 
8 = a. pulmonalis; 9 = v. pulmonalis; 10=v. cordis magna. 
Figure 4-20: Thymus in situ, ventral aspect. Organ has fatty, pale appearance and 
is bordered caudally by heart, on left by lungs, and craniolaterally by clavicle. 
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