Term
| Myocytes account for ___% of cells and ____% of the volume of the heart |
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Definition
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Term
| which myocytes are smaller, atrial or ventricular? |
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Definition
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Term
| Atrial cells secrete and store what? |
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Definition
| ANP - atrial natriuretic peptide |
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Term
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Definition
| vasodilation, diuresis ad Na excretion |
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Term
| what do the ventricles produce and when do they produce it? |
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Definition
B-type Natriuretic peptide
under conditions of increased ventricular pressure |
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Term
| besides myocytes, what are the other heart cells? |
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Definition
| endothelial and fibroblasts |
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Term
| what are the 3 major epicardial coronary arteries? |
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Definition
left descending artery
left circumflex artery
right coronary artery |
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Term
| the right coronary artery supplies the _________________ 80% of the time. (the left circumflex supplies it the other 20%) |
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Definition
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Term
| what does the LAD supply? |
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Definition
apex
left anterior wall
anterior septum |
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Term
| what branches of the main coronary arteries perfuse the myocardium? |
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Definition
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Term
| which two valves are semilunar? |
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Definition
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Term
| semilunar valve's competency depends on what? |
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Definition
| the stretching and molding of their three cusps in presence of arterial backpressure |
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Term
| tricuspid and mitral valve competency depends on what? |
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Definition
| coordinated function of the anulus, leaflets, papillary mm, and associated left ventricular walls |
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Term
| cardiovascular dysfunction occurs by: |
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Definition
failure of the pump
conduction disorders
regurgitant flow
obstruction of flow
disruption of the circulatory system |
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Term
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Definition
| increased venous return increases the ventricular filling (end-diastolic volume) |
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