Cardiovascular System — Flashcards

Activation of _____ adrenergic receptors on the cardiac myocytes causes increased cardiac contractility

A decreased TPR causes the cardiac output to _____ and venous return to increase

In the fetal period, the ductus arteriosus acts as a _____-to-left shunt

Relaxation of a myocardial cell occurs when:- Ca2+ is reaccumulated in the sarcoplasmic reticulum by the action of _____- Ca2+ is pumped out of the cell by the Na+/Ca2+ exchanger (NCX)

An increase in mean systemic pressure is reflected in a shift of the _____ function curve to the right

The most important local metabolic factors for coronary circulation are _____ and adenosine (vasodilatory)

The rate of phase _____ in the SA node action potential cycle determines heart rate

The indication of the end of the isovolumetric relaxation phase is when _____ pressure falls below atrial pressure.

Phase _____ of the myocardial action potential is characterized by a return to resting membrane potential

_____, or diastasis, is the longest phase of the cardiac cycle