28. When a cardiac muscle action potential is present, but t…

46.  Name the structures:

25. A dilatation at the bases of aorta & pulmonary trunk tha…

36.  Name this wall:

26. Final ventricular filling during the very end of diastol…

47. Name the valve:

42. Is this the wall of the left ventricle or the right vent…

33. Name the chamber wall:

31. Name the chamber:

16. Papillary muscles: