Which of the following is defined as "the ability of a cell to respond to an electrical stimulus"?
a. Conductivity c. Excitability
b. Rhythmicity d. Automaticity
ANS: C
Excitability is defined as the ability of a cell to respond to an electrical stimulus. Conductivity re-fers to the ability of cardiac tissue to propagate an action potential. Automaticity describes the ability of certain specialized cells of the heart to depolarize. Rhythmicity refers to the heart's pacemaker action potential.
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a. concentration independent. b. time dependent. c. concentration-dependent effect. d. postantibiotic effect.
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a. True b. False Indicate whether the statement is true or false
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