| Term | Definition |
|---|
| 120/38 | normal blood pressure |
| 300/# of large squares | how to figure out heartbeat from EKG |
| Sinus Node (SA node) | 1st place an impulse goes |
| AV node | 2nd place an impulse goes |
| Bundle of His | 3rd place an impulse goes |
| Purkinje fibers | 5th place an impulse goes |
| Bundle Branches | 4th place an impulse goes |
| 1st | atria contract (atrial systole/depolarization) |
| 2nd | atria relax (atrial diastole/repolarization) |
| 3rd | ventricles contract (ventricular systole/depolarization) |
| 4th | ventricles relax (ventricular diastole/repolarization) |
| P wave | atrial depolarization |
| QRS complex | onset of ventricular depolarization |
| T wave | ventricular repolarization |
| jugular vein | vein from head to heart |
| mesenteric artery | supplies blood to the digestive system |
| subclavian arteries | supplies blood to the arms |
| coronary arteries | supplies blood to the heart |
| arteries, arterioles, capillaries | arteries big to small |
| vein, venules, capillaries | veins big to small |
| arteries | thick walls, no valves, oxygenated blood, go away from the heart |
| veins | thinner walls, valves, deoxygenated blood, go towards the heart |
| Cardiac Output (CO) | how much blood your heart pumps out every min. |
| CO=SV X HR | formula for cardiac output |
| Heart Rate (HR) | how often the heart beats, normal is 75/min |
| Stroke Volume (SV) | how much blood your heart pumps out every time it contracts, normal is 70mL |
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