Term
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Definition
beats 100,00 x a day,
36 million x a year |
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Term
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Definition
| upper chambers that collect blood |
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Term
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Definition
| lower chambers that circulate and pump blood |
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Term
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Definition
| collects and pumps deoxygenated blood |
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Term
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Definition
| collects and pumps oxygenated blood |
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Term
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Definition
| most superficial layer of the heart |
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Term
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Definition
| middle layer of the heart; consists mainly of muscle fibers and connective tissue |
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Term
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Definition
| most deep or innermost layer of the heart |
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Term
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Definition
| made of simle squamous epithelium; lines the inside of heart chambers |
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Term
| Visceral Pericardium (AKA EPC) |
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Definition
| innermost layer of the pericardium |
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Term
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Definition
| middle layer of the pericardium |
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Term
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Definition
| contains serous fluid (pericardial fluid) for lubrication |
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Term
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Definition
| thin space between the Visceral and Parietal Pericardium |
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Term
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Definition
| outer most layer of the pericardium |
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Term
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Definition
| anchors the heart to the diaphragm |
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Term
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Definition
| exits from the base of the ascending aorta through the opening of the Left Sinus of Valsalva |
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Term
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Definition
| exits from the base of the ascending aorta through the opening of the Righ Sinus of Valsalva |
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Term
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Definition
| lies within the mediastinum and extends from the 2nd rib to the 5th intercostal space |
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Term
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Definition
boundaries:
Anterior- sternum
Posterior- vertebral column
Lateral- lungs on either side
Inferior- diaphragm |
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Term
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Definition
| receives oxygen-depleted blood from the superior/inferior vena cava |
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Term
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Definition
| Tricuspid Valve opens to release blood into here |
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Term
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Definition
| contracts to send oxygen-depleted blood to the lungs via the pulmonary arteries |
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Term
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Definition
| receives oxygen-rich blood from the lungs via the pulmonary veins |
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Term
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Definition
| Mitral Valve opens to release blood into here |
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Term
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Definition
| contracts to send oxygen-rich blood to the aorta; the heart's most muscular chamber |
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Term
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Definition
| separates the right and left atrium |
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Term
| Interventricular Septum (IVS) |
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Definition
| separates the right and left ventricles |
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Term
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Definition
| all events associated with one heartbeat |
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Term
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Definition
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Term
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Definition
| tool used to measure blood pressure |
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Term
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Definition
| period of ventricular contraction; the higher number in B.P. |
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Term
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Definition
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Term
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Definition
| period of relaxation of all four chambers of the heart |
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Term
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Definition
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Term
| Tricuspid Valva (AKA RAV) |
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Definition
| located between right atrium and ventricle |
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Term
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Definition
| located between the left atrium and ventricle |
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Term
| Pulmonary Semilunar Valve |
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Definition
| at the base of the pulmonary artery |
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Term
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Definition
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Term
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Definition
| the heart's primary pacemaker |
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Term
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Definition
| initiates and coordinates heart contractions |
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Term
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Definition
| produces spontaneous electrical signals at a regular rate |
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Term
| Atrioventricular Node (AV) |
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Definition
| slows the electric impulses, postponing ventricular contraction by 0.1 seconds |
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Term
| Atrioventricular Node (AV) |
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Definition
| delays contractions to give atria time to complete transfer of blood |
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Term
| Automated External Defibrillator (AED) |
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Definition
| applies a jolt of electricity to the heart to synchronize contractions |
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Term
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Definition
| measures electrical activity underlying contractions |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| just before ventricular relaxation |
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Term
| Parasympathetic Nervous System |
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Definition
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Term
| Sympathetic Nervous System |
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Definition
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