Which of the following statements are true?

I've highlighted the ones that I think are right. They may be false statements, and I probably missed other true statements. Please help!

A. Increasing vagal tone has a negative inotropic effect on the heart.
B. Increasing CAC activity has a positive chronotropic effect on the heart.
C. CAC activity would likely increase in response to an increase in SV.
D. Releasing NE onto the heart would likely decrease ESV.
E. Increasing venous return would likely decrease ESV due to Starling's law of the heart.
F. CIC activity would likely increase as a result of a decrease in ESV.
G. Increasing vagal tone and vasomotor tone cause a decrease in blood pressure.
H. Cardiac output could be calculated as the number of separate cardiac cycles in one minute times the amount of blood pumped out of a ventricle in one cycle.
I. Vasomotor tone would likely increase in response to an increase in SV.
J. Baroreceptor activity has a positive effect on the frequency of impulses sent out of the vasomotor center.
K. Vasomotor center activity is negatively correlated to the frequency of impulses sent from the aortic and carotid baroreceptors.
L. The cardiac skeleton depolarizes at the same time the AV node depolarizes
M. The left ventricle pumps more blood in one minute than does the right ventricle.
N. Stretching carotid baroreceptors has a positive effect on CAC activity.
O. The amount of stretch in the aortic baroreceptors has a positive effect on vagal tone.
P. CIC activity has an inverse effect on cardiac output.
Q. Afterload has a positive effect on the length of the period of isovolumetric contraction.
R. Vagus nerve activity has a negative effect on the amount of time required for pacemaker cells to reach threshold voltage.
S. CAC activity would be expected to increase if baroreceptors are less active.
T. Epinephrine has an inverse effect on length of the quiescent period.
U. Ach steepens the slope of the pacemaker potential.
V. All heart valves are closed immediately before the QRS complex.
W. Ventricular pressure is highest when chordae tendineae are becoming loose.
X. Ventricular systole is not visible on an ECG.


Thank you!