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Chest pain caused by diseased blood vessels restricting blood flow to the heart. May cause pain or discomfort, heaviness,tightness, pressure or burning, numbness, aching, tingling in the chest, back, neck, throat, jaw, and/or arms. |
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| The largest artery in the body and the initial blood-supply vessel from the heart.[image][image] |
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| The valve that regulates blood flow from the heart into the aorta. |
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| The lowest superficial part of the heart. It is directed downward, forward, and to the left, and is overlapped by the left lung and pleura. It lies behind the fifth intercostal space. |
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| The two upper or holding chambers of the heart.[image] |
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Conducting tissue at the bottom of the right atrium in which electrical impulses must pass to reach the ventricles. [image] |
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| Atrioventricular (AV) Node |
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A group of cells located between the atria (upper two chambers) and the ventricles (lower two chambers) that regulate the electical current (heart rhythym) that passes through it to the ventricles. [image] |
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| [image]The structure that controls blood flow between the heart's left atrium (upper chamber) and left ventricle (lower chamber) |
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Named after Wilhelm His, an A-V bundle or atrioventricular bundle of small mass fibers. The only known direct connection between the ventricles and the atria that conducts impulses to the ventricular heart muscle. [image] |
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| A type of involuntary striated muscle found in the walls of the heart. As it contracts, it propels blood into the heart and through the blood vessels of the circulatory system.[image] |
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