| A | B |
|---|
| baroreceptors | stretch receptors in aortic arch and carotid sinus that assist with blood pressure control |
| cardiac output | volume of blood ejected from the left ventricle in one minute |
| central venous pressure | pressure produced by venous blood in the right atrium |
| chemoreceptors | structures that are sensitive to the pH, CO2, and oxygen in the blood and regulate the sympathetic nervous system |
| conductivity | ability of cardiac tissue to transmit an electrical stimulus from cell to cell within the heart |
| contractility | ability of cardiac tissue to stretch as a single unit and recoil |
| depolarization | stage when positive ions move inside the myocardial cell membranes and the negative ions move outside |
| dysrhythmias | conduction disorder that results in an abnormally slow or rapid heart rate or one that does not proceed through the conduction system in the usual manner |
| polarization | stage during diastole when positive ions predominate outside myocardial cell membranes and begative ions predominate inside |
| repolarization | stage when ions realign themselves in their original position and wait for an electrical impulse |
| stroke volume | amount of blood pumped per contraction of the heart |
