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34 Cards in this Set
- Front
- Back
What is the function of the heart?
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to pump enough blood to meet the body's metabolic needs
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Where is the heart located?
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Between the lungs, above the diaphragm, behind the sternum and in front of the spine. In the mediastinum cavity.
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What are the 3 layers of the heart?
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Epicardium - outer layer
Myocardium - middle layer Endocardium - inner layer |
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Name the 4 chambers of the heart
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Right Atrium
Left Atrium Right Ventrical Left Ventrical |
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What is the pericardium?
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a double walled sac that encloses the heart
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What is the septum?
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a muscular band of tissue that divides the heart into right and left sides
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Where is the pulmonic valve located?
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between right ventricle and the pulmonary artery
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Where is the Aortic valve located?
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between the left ventrical and the aorta
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Where is the tricuspid valve located?
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between the right atrium and ventricle
(has 3 cusps) |
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Where is the mitral valve located?
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between the left atrium and ventricle
(has 2 cusps) |
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What are the 2 semilunar valves?
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Pulmonic and Aortic
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What are the 2 Atrioventricular (AV) valves?
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Tricuspid and Mitral
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What does pericardial fluid do?
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minimizes friction between the layers of the pericardium
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What does the right atrium do?
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collects deoxygenated blood from the body
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What does the right ventricle do?
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pumps deoxygenated blood to the lungs for a fresh supply of oxygen
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What does the left atrium do?
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collects oxygenated blood from the lungs
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What does the left ventricle do?
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pumps oxygenated blood out to the entire body
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What is the purpose of the heart valve?
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to prevent backflow of blood
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The cardiovascular system is composed of what?
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the heart and blood vessels
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Name the four heart valves
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Pulmonic
Aortic Tricuspid Mitral |
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Name the five great vessels of the heart
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Superior Vena Cava
Inferior Vena Cava Pulmonary Artery Pulmonary Vein Aorta |
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List the phases of diastole
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rapid filling phase
diastasis atrial kick |
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What is the effect of Diastole on the EKG?
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P wave
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List the phases of systole
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Isovolumetric contraction
Ventricular ejection protodiastole isovolumetric relaxation |
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What is the effects of systole on the ekg?
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QRS Complex
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The atrial kick is represented on th EKG as a __________.
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P wave
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Once the atria have delivered blood to the ventricles, the ventricles depolarize and a _____________ is written on the EKG.
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QRS complex
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Name the 3 coronary arteries
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Left anterior descending (LAD)
Circumflex Right coronary artery |
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The two atria are divided by what?
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interatrial septum
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The two ventricles are divided by what?
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interventricular septum
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What is diastole?
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the period of relaxation and filling of the ventricles
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What is systole?
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the period during which the ventricles contract and empty blood
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What is the only artery that carries deoxygenated blood?
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pulmonary artery - carries deoxygenated blood from the heart to the lungs
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What is the only vein that carries oxygenated blood?
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pulmonary vein - returns oxygenated blood to the heart from the lungs
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