Front | Back |
Pulmonary Circuit
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(deoxygenated) heart to lungs to heart
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Systemic Circuit
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(oxygenated) heart to body tissues to heart
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Atria
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Collecting chambers; collect blood returning from lungs/tissues
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Ventricles
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Muscular chambers pump blood to tissues/lungs
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Parietal Pericardium
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Outermost layer
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Visceral Pericardium
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Innermost layer
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Visceral Pericardium (Epicardium)
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Heart tissue and outermost layer of heart
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Myocardium
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Middle layer of heart; thickest; contains cardiac cells
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Endocardium
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Innermost layer; inner wall lining of heart chambers
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Right Atrium
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(3 vessels) collects deoxygenated blood returning from tissues
Superior Vena Cava-large; serves upper body Inferior Vena Cava-large; serves lower body Coronary Sinus-small; nourishes myocardium |
Right Ventricle
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Sends blood to lungs (through pulmonary circuit) through pulmonary trunk; unloads carbon dioxide and oxygen at the lungs
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Left Atrium
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(4 vessels)
2 right pulmonary veins-right lung to atrium 2 left pulmonary veins-left lung to atrium |
Left Ventricle
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Thickest; most muscular; pressure sends blood throug hthe aorta to all body tissues
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Atrioventricular valves (AV)
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Between an atria and a ventricle
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Tricuspid Valve
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Right atria and right ventricle; 3 cusps
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