1) Which of the following is true about the events occurring from A to B? Check
ID: 3517587 • Letter: 1
Question
1) Which of the following is true about the events occurring from A to B? Check all that apply.
(a) According to this diagram, the stroke volume is 70 mL.
(b) Only about half of the blood leaves the ventricle during this time.
(c) It ends when ventricles depolarize, as represented by a T wave.
(d) Aortic pressure is greater than the ventricular pressure during this phase.
2) Which of the following is true about the events occurring from D to C? Check all that apply.
(a) According to this diagram, the end-diastolic volume is 65 mL.
(b) At the end of this phase, atrial contraction occurs, increasing atrial pressure and causing more blood to move into the ventricle.
(c) It starts when ventricular pressure drops below atrial pressure, opening the AV valve.
(d) This phase is largely represented by the TP segment on the ECG.
Ventricular systole Ventricular diastole L ORS -Electrocardiogram (ECG) % Aortic pressure % ?? ?? Left ventricular pressure ? , & ° — Left atrial pressure - D jw w -Left ventricular volume C Heart soundsExplanation / Answer
1. True statements regarding the diagram given above:
(C) it ends when ventricles depolarize, as represented by a T wave.
2.
(b) At the end of this phase, atrial contraction occurs, increasing atrial pressure and causing more blood to move into the ventricle.
(c) it starts when ventricular pressure drops below atrial pressure, opening the AV valve.
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