Group 3- Section 17_4-17_5

70 ml

Approximately how much blood is pumped from each ventricle during the ventricular ejection phase?

40 ml

Calculate the end-systolic volume (ESV) if the end-diastolic volume (EDV) in a resting heart rate is 110 ml and stroke volume (SV) is 70 ml.

forces the semilunar valves open

High-pressured blood in the ventricles ___.

Stroke volume (SV)

What is the volume of blood pumped out by one ventricle per heart beat?

End-diastolic volume (EDV)

What largely determines preload?

Stroke volume (SV) and heart rate (HR)

What two valves are needed to calculate cardiac output (CO) for a ventricle?

Left ventricle

Which chamber generates the highest pressure during systole?

atrial natriuretic peptide

Which hormone decreases cardiac output by decreasing blood volume and preloads?

Acetylcholine

Which of the following chemical messages decreases heart rate?

closing of the atrioventricular valves

Which of the following events can be heard most easily with a stethoscope?

Increased heart rate and increased stroke volume

Which of the following factors would increase cardiac output to the greatest extend.

SA node atrial contractile cells AV node where it delayed AV bundle right and left bundle branches Purkinje fibers ventricular contractile cells.

Which of the following paths does an action potential in the heart normally take?

Afterload

Which of the following terms refers to the force the ventricles must overcome to eject blood into their respective arteries?

P wave

Which wave on the electrocardiogram (ECG) corresponds with the ventricular filling phase of the cardiac cycle?