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bacterial infection of the endocardium |
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Supplies oxygenated blood to the walls of the ventricles and the right atrium. |
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Directs oxygenated blood to the left anterior descending artery and the left circumflex. |
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aka- atrioventricular groove-a surface groove encircling the heart that separates the atria from the ventricles. It contains the right coronary artery, the small cardiac vein, the coronary sinus, and the circumflex branch of the left coronary artery. |
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The coronary sinus is a collection of veins joined together to form a large vessel that collects blood from the myocardium of the heart. It is present in all mammals, including humans. It delivers deoxygenated blood to the Right atrium in conjunction with the superior and inferior vena cava. |
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a region of dead, deteriorating tissue resulting from a lack of blood supply |
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intrinsic conduction system |
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aka nodal system- a system built into the heart tissue that sets basic rhythm; composed of a special tissue that is nowhere else in the body; causes heart muscle depolarization in only one direction; from the atria to the ventricles; enforces75 beats per minute |
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components of the intrinsic conduction system |
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sinoatrial node-located in the right atrium
atrioventricular node-located at the junction of the atria and ventricles
atrioventricular bundle
right and left bundle branches- located -interventricular septum |
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spread within the walls of the ventricle muscle;These fibers are specialized myocardial fibers that conduct an electrical stimulus or impulse that enables the heart to contract in a coordinated fashion |
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the loss of a state of polarity; the loss of a negative charge inside the plasma membrane |
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