59 



RABBIT 



25. Thoracic organs as exposed by cutting through the ribs and removing the sternum : ribs ; thymus gland ; 

 heart; lungs; phrenic nerves; diaphragm. 



26. The heart and great vessels as seen after the thymus gland has been removed and the heart turned 

 towards the animal's right side : left auricle ; left ventricle ; apex of heart ; pulmonary artery ; arch of aorta ; 

 innominate, right subclavian, right common carotid, left common carotid and left subclavian arteries ; aorta passing 

 through diaphragm ; left superior vena cava ; left subclavian, external jugular and pulmonary veins ; inferior vena 

 cava; oesophagus. 



