Term
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Definition
| middle cavity of thorax where heart resides |
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Term
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Definition
| 'sac' surrounding the heart |
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Term
| parietal layer of pericardium |
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Definition
| outer layer of the pericardial sac |
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Term
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Definition
| name of external ear OR the wrinkled sac on the atria |
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Term
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Definition
| connections of heart muscle cells. |
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Term
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Definition
| due to gap junctions, the heart behaves as one ___ ____. |
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Term
| automaticity / autorhythmycity |
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Definition
| cells of heart can activate themselves, a property termed... |
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Term
| absolute refractory period |
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Definition
| section of the heartbeat that lasts longer than in the muscle contraction |
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Term
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Definition
| channels responsible for the plateau seen on the graph of depolarization of the heart |
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Term
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Definition
| extended depolarization is called ___. occurs in the heart |
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Term
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Definition
| lack of blood/oxygen to a tissue. can lead to tissue death |
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Term
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Definition
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Term
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Definition
| stage of heartbeat where the volume of blood in ventricle doesn't change. this is due to rising pressure to meat that in aorta or pulmonary circuit. |
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Term
| preload and afterload are maximal when heart is stretched past normal due to venous return |
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Definition
| Frank- Starling Law of the Heart |
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Term
| Tachycardia and bradycardia |
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Definition
| high and low heart rate, respectively |
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