Cardiovascular System Vocab
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Created by:
tylerthomas16 on February 8, 2011
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20 terms
Terms | Definitions |
|---|---|
 Apex | Directed towards left hip and rests on the diaphragm. |
| Base | Points towards right shoulder and lies beneath the second rib |
| Pericardium | A double sac of serous membrane that covers the heart |
| Myocardium | Consists of think bundles of cardiac muscles twisted and whorled into ringlike arrangements |
| Endocardium | Thin glistening sheet of endothelium that lines the heart chambers |
| Pulmonary Circulation | Circulation from the right side of the heart to the lungs and back to the left side of the heart |
| Pulmonary Arteries | Carry blood to the lungs |
| Pulmonary Veins | Oxygen-ric blood drains from the lungs and is returned to the left side of the heart through four of these |
| Systemic Circulation | Circulates from the left side of the heart through the tissues and back to the right side of the heart |
| Coronary Arteries | Branch from the base of the aorta and encirle the heart in the atrioventricular groove at the junction of the atria and ventricles |
| Cardiac Veins | Empty into the coronary sinus |
| Coronary Sinus | Backside of the heart which empites into the right atrium |
| Diastole | Heart relaxation |
| Systole | Heart contraction |
| Cardiac Output (CO) | amount of blood pumped out by each side of the heart in one minute |
| Stroke Volume | volume of blood pumped out by a ventricle with each heartbeat |
| Fibrillation | A rapid uncoordinated shudder of the heart muscle |
| Pulse | A pressure wave that travels through the entire arterial system |
| Blood Pressure | The pressure the blood exerts against the inner walls of the blood vessels |
| Hypertension | "High blood pressure" is pathlogical; sustained elevated arterial pressure of 140/90 or higher |
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