372 



Large 



papillary 



muscle 



Large 



pap'l- I 



|lary 

 muscle 



The Heart. 



Septum musculare ventriculorum 



Ventriculus dexter I 



I Ventriculus sinister 

 Septum musculare ventriculorum 



Wiitrieulus tloxtcr | 



\ entnculus sinister 



Posterior 



"papillary 



muscle 



Anterior 



"papillary 



muscle 



Posterior 



.papillary 



muscle 



Anterior 



-papillary 



muscle 



417 and 418. Cross-sections of two hearts between the 



upper and middle third of the ventricles, perpendieukir to the long axis. 

 The upper heart has been fixed in systole, the lower in diastole. (After L. Krebl.) 



