ECG ORIENTATION KAISER Exam Questions And Answers 100% Pass
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Course
ECG
Institution
ECG
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...
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
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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