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The systemic circuit carries blood to and from the ..... |
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The pulmonary circuit carries blood to and from the.... |
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What are the 3 types of blood vessels? |
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Arteries, Veins, capillaries |
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Capillaries are networks between ____ and ______. |
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What are also called exchange vessels? |
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What exchanges materials between blood and tissues? |
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What materials do capillaries exchange? 3 of them |
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dissolved gases, nutrients and wastes. |
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What is the general circulation through the body. |
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Body..Sup & Inf Vena Cava.. RA..RV.. PA..lungs..PV..LA..LV..Aorta..Body |
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Cardiac Muscle Tissue - Intercalated discs Interconnect__________ Secured by ________ Linked by__________ Propagate__________ |
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-cardiac muscle cells -desmosomes -gap junctions -action potentials |
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____________ Supplies blood to muscle tissue of the heart. |
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__________ Supplies heart muscle with nutrients, oxygen, and removes wastes. |
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Which ventricle contracts more forcefully and develops higher pressures? |
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Do the two ventricles contract simultaneously? |
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Resistance in the pulmonary circuit is low due to _______. |
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high capillary density (high surface area |
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The low pressure in the pulmonary circuit also protects the ________ of the lungs. |
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There is low pressure in the pulmonary circuit because??? |
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Definition
Because there is a high capillary density (high surface area) |
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What protects the delicate blood vessels of the lungs. |
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Definition
the low pressure in the pulmonary circuit. |
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Definition
Outer layer of the membrane around the heart. Anchors the heart to surronding structures. Made of collagenous connective tissue that prevents overfilling. |
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Serous pericardium (parietal and visceral layers) |
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It is the inner layer. Contains two layers within itself. Parietal, outer, which is fused to the fibrous pericardium. Visceral, inner, which is attached to the heart. Also known as the epicardium. |
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Actual muscle of the heart. Consists of cardiac muscle and fibrous skeleton |
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A type of simple squamous epithelium called endothelium. |
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Endocardium. Part of the epicardium |
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The atria that recieves deoxygenated blood |
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Atria that recieves oxygenated blood from the pulmonary veins. |
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Ventricle that recieves deoxygenated blood from the atria |
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Ventricle that ejects blood to the aorta |
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Valve inbetween right atria and ventricle |
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valve between left atria and ventricle |
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What are the two semilunar valves? |
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Pulmonary Valve and Aortic Valve |
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Valve between right ventricle and pulmonary trunk |
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Valve between left ventricle and aorta |
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Each cusp of the atrioventricular valves is attache to collagenous "strings". They are tendon like and connect valves to papillary muscles.... called.... |
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Muscles within the ventricular walls. Prevents valves from everting into the aorta by attaching to the chordae tendineae. |
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Drains systemic circuit and recieves nutrients and gas exchange. Delivers deoxygenated blood to the right atrium. |
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large vein that collect blood inferior to the heart and returns it. |
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Recieves blood from the right ventricle. Splits into L and R |
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Returns blood from the pulmonary circuit to the left atrium. |
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The main systemic trunk of the arterial system of the body that emerges from the left ventricle |
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A small mass of cardiac muscle fibers located in the right atrium. Inferior to S.vena cava that spontaneously depolarizes and generates a cardiac action potential of 100 beats/min. |
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Natural pacemaker of the heart |
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