Chapter 12
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| show | carries blood to and from the exchange surfaces of the lungs
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| show | transports blood to and from the rest of the body
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| show | efferent vessels,carry blood away from the heart
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| Veins | show 🗑
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| show | small thin walled vessels between the smallest arteries and the smallest veins; the thin walls permit the exchange of nutrients,dissolved gases, and waste products between the blood and surrounding tissues
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| show | receives blood from the systemic circuit
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| show | discharges blood into the pulmonary circuit
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| Left Atrium | show 🗑
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| Left Ventricle | show 🗑
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| show | connective tissue mass that divides the thoracic cavity into 2 plueral cavities;also contains the thymus,esophagus,and trachea
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| show | this cavity surrounds the heart
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| show | serous membrane lining the pericardial cavity
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| Base | show 🗑
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| Visceral Pericardium | show 🗑
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| show | lines the inner surface of the pericardial sac which surrounds the heart
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| Pericardial Fluid | show 🗑
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| Auricle | show 🗑
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| show | deep groove usally filled with substantial amounts of fat, marks the border between the atria and the ventricles
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| show | marks the border between the left and right ventricles
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| show | inferior,pointed tip of the heart
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| show | covers the outer surface if the heart
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| show | muscular wall of the heart, contains cardiac muscke tissue, blood vessels and nerves
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| show | inner surface of the heart;simple squamous epithelium that is continuous with the endothelium of the attatched vessels
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| Intercalated Discs | show 🗑
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| Superior Vena Cava | show 🗑
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| Inferior Vena Cava | show 🗑
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| Coronary Sinus | show 🗑
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| show | allows blood to flow from the right atrium to the left atriumwhile the lungs were developing at birth; closes and after 48 hrs is permanently sealed
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| Right Atrioventricular Valve (AV) | show 🗑
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| Chordae Tendineae | show 🗑
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| show | cone shaped projections on the inner surface of the ventricle; contraction of these muscles tenses the chordae tendineae limiting the movement of the cusps and preventing the backflow of blood into the right atrium
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| Pulmonary Trunk | show 🗑
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| Pulmonary Semilunar Valve | show 🗑
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| show | branch repeatedly into the lungs
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| Left/Right Pulmonary Veins | show 🗑
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| show | bicuspid valve; mitral valve
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| show | blood leaving left ventricle passes through here before moving into the aorta (start of systemic system)
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| show | prevent backflow from venticles into atria
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| show | backflow of blood into the atrium; heart murmur
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| show | prevent the cusps from sticking to the wall of the aorta when the valve opens
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| Fibrous Skeleton | show 🗑
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| show | supplies blood to the muscle tissue of the heart
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| Coronary Arteries | show 🗑
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| show | provides blood to the right atrium and portions of both ventricles
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| show | supplies blood to the left ventricle left atrium and interventricular septum
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| Anastomoses | show 🗑
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| show | carry blood away from the coronary capillaries
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| Coronary Sinuses | show 🗑
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| show | area of dead tissue caused by an interruption in the blood flow
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| Myocardial Infarction | show 🗑
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| Heartbeat | show 🗑
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| show | produce powerful contractions that propel blood;bulk of the hearts muscle tissue
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| show | 250-300 msec,25-30 times as long as an action potential in a skeletal muscle fiber
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| Conducting System | show 🗑
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| show | responsible for establishing the rate of cardiac contraction and are located at the sinoatrial (SA) and (AV) Nodes
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| Conducting Cells | show 🗑
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| show | AV Bundle, bundle branches, and Purkinje fibers
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| Pacemaker cells | show 🗑
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| Sinoatrial Node (SA node) | show 🗑
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| Atrioventricular Node (AV Node) | show 🗑
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| AV Bundle | show 🗑
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| show | radiate across the inner surface of the left and right ventricles
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| Purkinje Fibers | show 🗑
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| show | slow heart beat (less than 60 bpm)
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| Tachycardia | show 🗑
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| show | recording of heart beat
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| P wave | show 🗑
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| show | strong signal
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| show | ventricular repolarization
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| Cardiac Arrhythmias | show 🗑
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| show | period between the start of one heart beat and the start of the next
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| show | contraction
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| show | relaxation-filling of blood
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| show | AV Valves closes and semilunar opens
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| show | semilunar valve close
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| show | amount ejected by a ventricle during a single heart beat
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| show | amount of blood pumped by each ventricle in 1 min
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| CO | show 🗑
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| show | produces adjustments in heart rate to an increase in the venous return
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| Venous return | show 🗑
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| show | duration of ventricular diastole when blood can flow into the ventricles
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| show | "more in = more out"
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| Cardioacceleratory Center | show 🗑
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| show | controls the parasympathetic motor neurons
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