Bio30S U3: The Heart Facts
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9 terms
Terms | Definitions |
|---|---|
 cardiac cycle | a two-part pumping action that takes approximately one second |
| the blood is forced back against the atrioventricular valves, causing the valves to CLOSE | what happens when the ventricles contract |
| LUBBDUBB | the sound of the valves closing |
| semi-lunar valve | found between the ventricle and the arteries |
| the beginning of ventricular contraction (atria relax) SYSTOLE | lub sound signals... |
| the pulmonary and aortic valves closing between the ventricles and their arteries, signaling the beginning of ventricular relaxation (atria contract) know as DISTOLE | dub sound signals.... |
| stethoscope | used to listen to the lubb dubb sound of the heart beat |
| Electrocardiogram | used to measure electrical activity in the heart |
| sphygmomanometer | used to measure blood pressure |
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