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18 Cards in this Set
- Front
- Back
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communication between two or more vessels
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anastomosis
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time period from the end of one cardiac contraction the end of another.
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cardiac cycle
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period of time when the myocardium is relaxed and cardiac filling and coronary perfusion occur
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diastole
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the period of the cardiac cycle when the myocardium is contracting
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systole
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pertaining to the heart rate
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chronotrophy
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pertaining to the cardiac contractile force
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inotropy
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the speed of impulse transmission
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dromotropy
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specialized bands of tissues inserted between myocardial cells that increase the rate in which teh action potential is spread from cell to cell
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intercalated discs
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group of cardiac muscle cells that physiologically function as a unit
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syncytium
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reversal of the charges at a cell membrane so that the inside of the cell becomes positive in relation to the outside
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cardiac depolarization
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normal electrical state of cardiac cells
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resting potential
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stimulation of myocardial cells
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action potential
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returning of a cell to it's resting state
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repolarization
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ability of the cell to react to electrical stimulus
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excitability
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ability of a cell to propagate the electrical impulse from one cell to another
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conductivity
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pacemaker cells capability of self-depolarization
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automaticity
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ability of muscle cells to contract or shorten
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contractility
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law of physiology that blood flow through a vessel is directly proportional to the radius of the vessel to the 4th power
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poiseuille's law
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