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practical review
everything
| Question | Answer |
|---|---|
| AV Valves, PV Valves, Aortic Valves, | regulates opening betw. atria and ventricles, controld opening from RV to pulmonary vein, controls opening from LV to aorta |
| Left Side great cardiac vein circumflex artery | GCV- carries blood from apex and empties into coronary sinus. CA- supplies blood to LA and posterior wall of LV |
| RIGHT SIDE small cardiac vein right coronary artery | SCV-5-10% of coronary blood empties directly from these to heart chamber and RV, RCA- supplies right aorta and sinotrial node, gives off 2 branches |
| aorta | distributes oxygenated blood to every organ in body, unload oxygen and picks up carbon dioxide. largest vessel in body |
| pulmonary arteries | deoxygenated blood is sent to lungs where it unloads co2 and picks up o2. |
| pulmonary veins | oxygenated blood returns from lungs and enters LA |
| inferior/superior vena cava | S- drains upper body I- drains everything below diaphram |
| right and left coronary arteries | supplies RA and sinoatrial node(pacemaker), both ventricles and 2/3 of interventricular septum |
| cardiac veins | gets blood from anterior aspect of heart-->apex-->coronary sinus-->empties deoxygenated blood into coronary sinus |
| baroreceptors | send streams of signals to medulla, inform medulla of drop in BP |
| aortic arch | carries blood from dorsal blood vessel to ventral blood vessel |
| carotid sinus | baroreceptors that respond to changes in BP |
| change heart rate | chemoreceptors influence HR. HR is raides/lowered by pos or neg chronotropic agents |
| change is resistance of vessels | brings BP back to normal through dialation |
| normal values hemoglobin | male-13-18% female-12-16% |
| normal values hematocrit | male-42-52% female-37-48% |
| normal values RBC WBC PLT | RBC male-4.6-6.2 mil female-4.2-5.4 mil WBC 5-10,000 avg 7,000 PLT 250,000/mm3 |
| atria | thin walled recieving chambers for blood returning to heart by way of great veins. R-blood enters from inf/sup venacava, blood flows from R AVvalve to Rv. L- blood return from lungs via pulmonary veins to LA, blood from LA goes to LV. |
| ventricles right and left | 2 inferior chambers. pumps that eject blood into arteries and flow around body. R-mostly anterior aspect of heart L-forms apex and inferoposterior aspect |
| SA node AV node | SA-determine HR AV- electrical gateway to ventricle |
| AV bundle | pathway where signals leave AV node |
| purkinje fibers | distribute electrical excitation to cardiocytes of ventricles |
| P wave | signals from SA node and depolarizes them |
| QRS wave | ventricular depolarization |
| T wave | ventricular repolarization. DIASTOLE |
| U wave | repolarization of purkinje fibers |
| PR segmant SR segment | PR- delay of AV node SR- when ventricles are depolarized |
| S1 (LUBB) S2 (Dubb) S3 + 4 | 1- close AV valves 2- close semilunar valves 3- rare in adults, common in kids |
| Bolyles law | P=1/v lung vol. dec pressure incr. vise versa |
| Daltons Law | total pressure = pp of indiv. gas v=t inc. V inc. T |
Created by:
sbehrens
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