Cardiac cycle — Flashcards

Where in the heart is conduction velocity the slowest? _____

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

Inspiration delays closure of the _____ valve which causes splitting of the S2 heart sound

What phase of the cardiac cycle begins during the QRS complex on ECG? _____

Hint: specific

Parasympathetic stimulation decreases atrial contractility via _____ receptors

What type of calcium channels exist in the SA node? _____

Hint: 2

The _____ valve closes slightly before the _____ valve, thus heart sound S1 may be split

What is the approximate normal pressure in the left ventricle (systolic and diastolic)? _____

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

In muscle contraction, after the muscle cell is depolarized, the action potential travels down the _____ and to the dihydropyridine receptor