Pressure-volume relationships — Flashcards

Flashcard 1: _____ is the fourth phase of a cardiac cycle and represents the period just after mitral valve opening

Answer: Rapid ventricular filling

Flashcard 2: Which phase of the cardiac cycle is the period of highest O2 consumption? _____

Answer: Isovolumetric contraction

Flashcard 3: What phase of the cardiac cycle is most affected by changes in heart rate?_____

Answer: Reduced ventricular filling (diastasis)

Flashcard 4: Coronary blood flow peaks in early _____ (systole/diastole)

Answer: diastole

Flashcard 5: The heart sound _____ may be audible during isovolumetric contraction

Answer: S1

Flashcard 6: Which phase of the cardiac cycle (systole or diastole) is preferentially shortened with increased heart rate? _____

Answer: Diastole

Flashcard 7: Cardiac contractility correlates directly with intracellular _____ concentration

Answer: Ca2+

Flashcard 8: _____ is the fifth phase of a cardiac cycle and represents the period just before mitral valve closing

Answer: Atrial systole (atrial contraction)

Extra: In a common 5-phase model of the cardiac cycle: 1. Isovolumetric contraction 2. Ventricular ejection 3. Isovolumetric relaxation 4. Ventricular filling (Rapid and Slow/Reduced filling) 5. **Atrial systole**: The final phase of diastole where the atrium contracts to provide the "atrial kick." This phase occurs just before the closure of the AV valves (mitral and tricuspid).

Flashcard 9: Where in the heart is conduction velocity the slowest? _____

Answer: AV node

Extra:   https://onlinemeded.org/spa/cardiac/arrhythmias/acquire?ref=anki  

Flashcard 10: During rapid ventricular ejection, the ventricular pressure becomes greater than aortic pressure and the _____ valve opens

Answer: aortic

Extra:  Watch associated Bootcamp video [https://app.bootcamp.com/med-school/cardiology/videos/cardiac-cycle?index=6] https://onlinemeded.org?ref=anki