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Chapter 13
The Cardiovascular system
| Term | Definition |
|---|---|
| Apex | Blunt point, or lower edge of the heart |
| Cardiopulmonary resuscitation (CPR) | combined external heart massage and artificial respiration |
| Atria | Two upper heart chambers (Atrium) Receiving chambers |
| Ventricles | Two lower heart chambers, Discharging chambers |
| Auricle | Ear like appendage of each atrium of the heart |
| Myocardium | Inside muscle of the heart |
| Endocardium | Thin layer of very smooth tissue lining each chamber of the heart |
| Endocarditis | Inflammation of the lining of the heart |
| Thrombus | Stationary blood clot |
| Pericardium | Membrane that surrounds the heart consists of 2 layers |
| Visceral pericardium or Epicardium | Inner layer covers the heart the way skin covers an apple |
| Parietal Pericardium | Outer layer (fits around the heart like a loose fitting sack allowing room for the heart to beat) |
| Pericarditis | Inflammation of the Pericardium |
| Systole | Contraction |
| Diastole | Relaxation |
| Bicuspid or Mitral Valve | Located between the left atrium and ventricle |
| Tricuspid Valve | Located between the right atrium and ventricle |
| Semilunar Valves (SL) | located between each ventricular chamber |
| Pulmonary SL Valve | Valve located at the beginning of the pulmonary artery |
| Aortic SL Valve | valve between the aorta and left ventricle that prevents backflow into ventricle |
| Superior Vena Cava | One of 2 large veins returning deoxygenated blood to right atrium |
| Inferior Vena Cava | One of 2 large veins returning blood into right atrium |
| Pulmonary Artery | Artery that carries deoxygenated blood from right ventricle to lungs |
| Pulmonary Veins | Any vein that carries oxygenated blood from lungs to left atrium |