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Definition
| A two layered sac of tissue enclosing the heart. |
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Definition
| The right upper chamber of the heart, which receives blood from the body. |
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Definition
| The left upper chamber of the heart which receices blood from the lungs |
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Definition
| The right lower chamber of the heart, which pumps deoxygenated blood from the lungs. |
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Definition
| The left lower chamber of the heart, which pumps oxygenated blood through the body,It is the biggest and strongest chamber, know as the workhorse of the heart. |
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Definition
| A partition or wall (septum) that divides the right and left ventricles |
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Definition
| Valve located between the right atrium and right ventricle, it prevents back flow of blood into the right atrium |
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Definition
| Valve with two cusps of leaflets located between the left atrium and left ventricle. It prevents backflow of blood into the left atrium. |
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Definition
| Large artery that transports deoxygenated blood from the right ventricle of the lungs. this is the only artery in the body that carries deoxygenated blood. |
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Definition
| The largest artery of the body which transports oxygenated blood from the left ventricle of th heart to the entire body. |
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Definition
| Valve with half moon shaped cusps that opens and close. allowing blood to travel only one way. located in the pulmonary artery and the aorta. |
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Term
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Definition
| valve located in the aorta that prevents the backflow of blood into the left ventricle |
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Term
pulmonary semilunar
Valve |
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Definition
| A valve found in the pulmonay artery that prevents backflow of blood into the right ventricle |
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Term
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Definition
| Top two chambers of the heart. |
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Term
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Definition
| Largest vein in the body, which provides a pathway for deoxygenated blood to return to the heart. |
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Definition
| transports blood from the head arms and upper body, |
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Term
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Definition
| transports blood from the lower body and legs |
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Term
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Definition
| blood that has little or minimal oxygen (oxygen poor blood) |
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Term
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Definition
| Transports oxygenated blood back into the left atrium of the heart. These are the only veins that carry oxygenated blood. |
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Term
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Definition
| Blood having oxygen (oxygen - right blood) |
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Term
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Definition
| The circulation of blood to and from the heart muscle |
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Term
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Definition
| The transportation of blood to and from the lungs blood is oxygenated in the lungs during pulmonary circulation |
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Term
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Definition
| the pathways for pumping blood throughout the body and back to the heart |
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Term
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Definition
| the circulation of blood to and from the heart muscle |
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Term
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Definition
| The contraction and relaxation of the heart |
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Term
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Definition
| The contraction phase of the cardiac cycle, during which the heart pumping bloodd out of the body. |
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Term
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Definition
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Term
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Definition
| the heart is expanding and refilling, also known as the relaxation phase. |
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Term
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Definition
| The ability of the heart to initiate an electrical impulse with out being stimulated by another or independent source |
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Term
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Definition
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Term
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Definition
| the ability of the heart cells to receice and transmit an electrical impulse |
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Term
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Definition
| The ability of the heart muscle cells to shorten in resond to an electrical stimulus |
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Term
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Definition
| the ability of the heart muscle cells to respong to an impulse or stimulus |
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Term
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Definition
| an aread of specialized cells in the upper right atrium that initiates the heartbeat. |
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Term
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Definition
| delays the electrical impulse to allow the atria to complete their contraction |
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Term
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Definition
| Located next to the av node, provides the transfer of the electrical impulse from the atria to the ventricles |
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Term
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Definition
| left and right branches of the bundle of his that conducts impulse down either side of the interventricular setum to the left and right ventricle |
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Term
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Definition
| The fibers within the heart the distribute elestrical impulses from cell to cell throughout the ventricles |
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Term
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Definition
| spreads the electrials impulse throughtout the ventricles by means of purkinje fibers |
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Term
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Definition
| the state of the cellular rest in which the inside of negatively charged and the outside is positively charge |
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Term
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Definition
| the electrical activation of the cells of the heart that initiates contraction |
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Term
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Definition
| the change in the electrical potential of the heart muscle when it is stimulated; depolarization followed by repolarization |
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Term
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Definition
| When heart muscle cells return to return to their resting electrical state and the heart muscle relaxes |
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Term
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Definition
| the period when the electrical tracing of th ecg is at zero or a straight line no positive or negative deflections are seen |
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Term
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Definition
| the period of time betwee two activites within the heart |
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Term
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Definition
| a portion or part of the electrical tracing produced by the heart |
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Term
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Definition
| Atrial or ventricular contractions as they appear on the ecg complete ecg wave forms |
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Term
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Definition
| Lack of blood supply to an area of tissue due to a blockage in the circulation to th area |
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