CORONARY PERFUSION OF EXCISED HEART 



11 



V. Find with the looped string the orifices of superior and inferior venae Obs. 7. 

 cavae. Pass the thin-walled glass tube through the right auricle, entering at °° ^^^ ^^ 



pace-maker. 



TEXT-FiOt 7. Beating of excised mammalian heart (rabbit) under coronary perfusion 

 with Einger-Locke fluid ; effect of lowering the temperature of the perfusion fluid (W, K. 

 Greenshields and A. H. Plummer). Time marked in 1". 



Text-fig. 8. The same ; effect of raising the temperature. 

 (H. M. MacKeith and H. L. Kayner.) 



superior cava, and so that its lower end projects from inferior cava (text-fig. 6, 3). 

 Connect the upper end of the tube (text-fig. 6, 3) with the rubber tube from 



c 2 



