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ECG ORIENTATION KAISER Exam Questions And Answers 100% Pass

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ECG ORIENTATION KAISER Exam Questions And Answers 100% Pass DEPOLARIZATION - answerMovement of ions (Na+, Ca+, K+) across cell membrane causing inside of cell to become more positive, electrical conduction results in contraction. Na+ channels open. Positive inside, negative outside. REPOLARIZA...

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  • November 11, 2024
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  • 2024/2025
  • Exam (elaborations)
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ECG ORIENTATION KAISER Exam
Questions And Answers 100% Pass


DEPOLARIZATION - answer✔Movement of ions (Na+, Ca+, K+) across cell membrane causing inside of
cell to become more positive, electrical conduction results in contraction. Na+ channels open. Positive
inside, negative outside.

REPOLARIZATION - answer✔movement of ions across cell membrane where inside of cell is restored to
its negative charge. Sodium channels close. Potassium channels open. Active transport by sodium-
potassium pump

DEPORIZATION - answer✔ELECTRICAL

CONTRACTION - answer✔IS MECHANICAL. CONTRACTION FOLLOWS DEPOLARIZATION.

WHAT OCCUR FIRST? ELECTRICAL CONDUCTION, OR MECHANICAL CONTRACTION? -
answer✔ELECTRICAL CONDUCTION

P WAVE - answer✔ATRIAL DEPOLARIZATION

QRS - answer✔VENTRICAL DEPOLARIZATION

T WAVE - answer✔ventricular repolarization

REFRACTORY PERIOD - answer✔the period of resistance to stimulation, cardiac cells unable to respond
to stimulus

relative refractory period - answer✔cardiac cells have repolarized enough to respond to strong stimulus

automaticity - answer✔Ability of pacemaker cells to spontaneously initiate an electrical impulse, SA
node, AV junction, and Purkinje fibers

excitability - answer✔ability to respond to stimuli

conductivity - answer✔Ability to receive an electrical stimulus and conduct that impulse to adjacent cells
- all cardiac cells possess this.

contraction - answer✔Cardiac cells shorten, causing muscular contraction in response to an electrical
stimulus

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