Choose the correct statements describing the experiment shown on the right. group a is the experimental group because it receives the treatment. group a is the control group because it does not receive the treatment. group b is the control group because it does not receive the treatment. group b is the experimental group because it receives the treatment.

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling