64 



35- Sheep's heart, interior of right side after exposure by a longitudinal cut through the ventral wall of 

 the right auricle and ventricle : wall of right auricle ; inter auricular septum ; fossa ovalis ; Eustachian valve ; wall 

 of right ventricle ; columnar carnece ; interventricular septum ; flaps of tricuspid valve ; chordce tendinece ; papillary 

 muscles; moderator band. 



36. Sheep's heart, interior of left ventricle and root of aorta after exposure by a longitudinal cut through 

 the aorta and ventral wall of the left ventricle : wall of ventricle ; columnce carnece ; flaps of mitral valve ; chordce 

 tendinece ; papillary muscles ; semilunar valves of aorta ; orifices of coronary arteries. 



