Cardiac cycle — Flashcards

Flashcard 41: Which phase of the cell cycle are secondary oocytes arrested in until fertilization? _____

Answer: Metaphase II (of meiosis II)

Flashcard 42: Phase _____ of the myocardial action potential is characterized by rapid repolarization

Answer: 3

Flashcard 43: Which phase of the cardiac cycle (systole or diastole) is preferentially shortened with increased heart rate? _____

Answer: Diastole

Flashcard 44: Slowed conduction through the AV node normally causes a(n) _____-msec delay, allowing time for ventricular filling

Answer: 100

Flashcard 45: Which phase of the cell cycle are primary oocytes arrested in until ovulation? _____

Answer: Prophase I (of meiosis I)

Flashcard 46: From the Bundle of His, the myocardial action potential enters the _____ and ultimately the ventricles

Answer: Purkinje fibers

Flashcard 47: What is the effect of M2 muscarinic agonists on conduction velocity? _____

Answer: Decreased CV (AV node)

Extra: Sketchy Pharmacology: Autonomics (Cholinomimetics)

Flashcard 48: A positive inotropic agent causes the cardiac output to _____ and right atrial pressure to _____

Answer: increase

Flashcard 49: The abnormal heart sound _____ may be audible during atrial systole (late ventricular diastole)

Answer: S4

Extra: * due to increased pressure; atrial gallop sound before S1;

Flashcard 50: How does atrial pressure change during rapid ventricular filling? _____

Answer: Decrease