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24 Cards in this Set
- Front
- Back
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Atria
"receiving chambers" |
blood enters from veins that open into these upper cavities
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Ventricles
"discharging chambers" |
blood is pumped from the heart into arteries that exit from ventricles
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Myocardium
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cardiac muscle tissue that composes the wall of each heart chamber
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Interventricular spetum
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septum between the atrial chambers
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Endocardium
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lines each heart chamber by a thin layer of very sooth tissue
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Pericardium
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covering of the heart
consists of two layers of fiberous tissue visceral paricardium (epicardium) parietal pericardium |
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Visceral Paricardium
(epicardium) |
inner layer of pericardium
covers the heart like a "skin" |
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Parietal Paricardium
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loose fitting sac around the heart
allows enough room for heart to beat |
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Endo
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"within"
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Epi
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"upon" or "on"
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Systole
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contraction of the heart
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Diastole
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relaxation of the heart
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Atrioventricular valves
AV valves |
two valves that seperate the atrial chambers from the ventricles
prevent backflow of blood |
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Bicuspid valve
(mitral) |
AV valve located between the left atrium and ventricle
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Tricuspid valve
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AV valve located between the right atrium and ventricle
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Semilunar valve
SL |
located between the two ventricular chambers and the large arteries that carry blood away from the heart
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Pulmonary SL valve
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located at the beginning of the pulmonary artery
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Aortic SL valve
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located at the beginning of the aorta
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Pulmonary circulation
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movement of blood from the right ventricle to the lungs
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Systemic circulation
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movement of blood from the left ventricle throughout the body
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Coronary circulation
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delivery of O2 and nutrient rich arterial blood to cardiac muscle tissue and return of O2 poor blood from tissue to venous system
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Right and left coronary arteries
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way by which blood flows into the heart muscle
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Myocardial Infarction
MI |
O2 deprived cells of the heart become damaged and die
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Angina Pectoris
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severe chest pain when myocardium is deprived of adequate O2
warning that coronary arteries are no longer able to supply enough blood and O2 to heart muscles |
