Term
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Definition
| The resistance against which the heart must pump to eject blood into the circulation |
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Term
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Definition
| Build up of fatty plaque within the arteries |
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Term
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Definition
| Two upper hollow chambers of the heart |
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Term
| Atrioventricular (AV) node |
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Definition
| Conduction pathways that slightly delay the transmission of the impulse from the atria to the ventricles of the heart |
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Term
| Atrioventricular (AV) valves |
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Definition
| Between the atria and ventricles of the heart, the tricuspid valve on the right and the bicuspid or mitral valve on the left |
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Term
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Definition
| An electrical impulse and contraction independent of the nervous system and generated by the cardiac muscle |
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Term
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Definition
| The force exerted on arterial walls by blood flowing within the vessel |
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Term
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Definition
| The right and left bundle branches of the ventricular conduction pathways |
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Term
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Definition
| The amount of blood ejected by the heart with each ventricular contraction |
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Term
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Definition
| The inherent ability of cardiac muscle fibers to shorten or contract |
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Term
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Definition
| A network of vessels known as the coronary circulation |
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Term
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Definition
| Enzyme that is released into the blood during a myocardial infarction |
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Term
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Definition
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Term
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Definition
| In measuring blood pressure, the period during which the ventricles relax |
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Term
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Definition
| A layer of the heart wall lining the inside of the Hearts chambers and great vessels |
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Term
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Definition
| The visceral pericardium adhering to the surface of the heart, forming the hearts outermost layer |
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Term
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Definition
| A condition that develops if the heart cannot keep up with the body's need for oxygen and nutrients to the tissues; usually occurs because of myocardial infarction, but it may also result from chronic overwork of the heart |
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Term
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Definition
| The red pigment in blood cells that carries oxygen |
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Term
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Definition
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Term
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Definition
| Deficiency of blood supply caused by obstruction of circulation to the body part |
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Term
| Metabolic syndrome (Met-S) |
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Definition
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Term
| Myocardial infarction (MI) |
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Definition
| Heart attack, cardiac tissue necrosis owing to obstruction of blood flow to the heart |
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Term
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Definition
| A layer of the heart wall; cardiac muscle cells that form the bulk of the heart and contract with each beat |
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Term
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Definition
| Double layer of fibroserous membrane of the heart; the parietal, or outermost, pericardium serves to protect the heart and anchor it to surrounding structures |
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Term
| Peripheral vascular resistance (PVR) |
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Definition
| Impedance or opposition to the blood flow to the tissues; determined by viscosity, or thickness, of the blood; blood vessel length; blood vessel diameter |
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Term
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Definition
| The degree to which muscle fibers in the ventricle are stretched at the end of diastole |
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Term
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Definition
| Fibers of the ventricular conduction pathways that terminate in ventricular muscle, stimulating contraction |
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Term
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Definition
| Crescent moon- shaped valves between the cardiac ventricles and the pulmonary artery (pulmonic valve) and the aorta (aortic valve) |
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Term
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Definition
| A dividing structure such as that between the cardiac chambers or between the two sides of the nose |
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Term
| Sinoatrial (SA or sinus) node |
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Definition
| The primary pacemaker of the heart located where the superior vena cava enters the right atrium |
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Term
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Definition
| The amount of blood ejected with each cardiac contraction |
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Term
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Definition
| The period during which the ventricles contract |
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Term
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Definition
| Enzyme that is released into the blood during a myocardial infarction |
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Term
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Definition
| Two lower chambers of the heart |
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