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1. Primary functions of the heart:
Answer pump oxygenated blood to the tissuesconduction system
2. Four chambers of the heart:
Answer right atrium, right ventricle, left atrium, left ventricle
3. Three layers of the heart:
Answer
endocardium: inner (protection)myocardium: middle (pumping)
epicardium: outer (covers valves and tendonae)
4. Atrioventricular valves:
Answer
Valveslocated between the atrial and ventricular chambers on each side of the heart,
prevent backflow into the atria when the ventricles are contracting.
(tricuspid and mitral) closed during contraction
5. Semilunar valves:
Answer
pulmonary and aortic valves located between the right ventricle and the pulmonary artery
and between the left ventricle and the aorta
closed during relaxation
6. Pericardium:
Answer Double-layered membrane surrounding the heartcontains up to 30ml of fluid
between layers for lubrication
NSG 430 Cardiac 1 Complete And Study material 34pages LEARNEXAMS
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