Anatomy of the heart
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Created by:
elizabeth_emmanuel on October 2, 2012
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19 terms
Terms | Definitions |
|---|---|
 The pericardium sac layers | Parietal and visceral |
| Parietal pericardium | outer layer |
| Visceral pericardium | inner layer |
| Pericardial cavity | between parietal and visceral layers, contains pericardial fluid, surrounds and stabilizes heart |
| Layers of the heart wall | epicardium, myocardium, endocardium |
| epicardium | outer layer, covers the heart |
| Myocardium | middle layer, muscular wall of the heart |
| endocardium | inner layer, simple squamous epithelium |
| Superficial anatomy of the heart | atria and sulci |
| atria | thin-walled, expandable outer auricle |
| sulci | fissure in the surface of an organ |
| what are the sulcus? | Coronary, anterior interventricular, posterior interventricular |
| coronary sulcus | divides atria and ventricles |
| anterior interventricular sulcus and posterior interventricular sulcus | separate left and right ventricles, contain blood vessels of cardiac muscle |
| intercalated discs | contain desmosomes and gap junctions, force of contraction, propagate action potentials |
| Internal Anatomy and organization consist of? | interatrial septum, interventricular septum, atrioventriclar valves |
| interatrial septum | separates atria |
| interventriclar septum | separates ventricles |
| Atrioventricular valves | 2 bicuspid 3 tricuspid valves, permit blood flow in one direction: atria to ventricles |
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