ECGS MADE EASY EXAM PREP QUESTIONS
AND ANSWERS FULLY VERIFIED
◉ Increased blood concentrations of ______ increase automaticity,
while decreased blood concentrations of _______ decrease
automaticity.
Answer: Calcium / Potassium
◉ When the inside of a cell is more negative than the outside, the
cell is said to be in a _______________ state
Answer: Polarized
◉ When a cell is at rest, ______ leaks out of it
Answer: K+ (Potassium)
◉ The movement of charged articles across a cell membrane that
causes the inside of the cell to become positive is called _______________
Answer: depolarization
◉ Depolarization, which is an electrical event, must take place
before the heart can ____________
Answer: contract and pump blood (mechanical)
, ◉ a 'P WAVE' represents:
Answer: Atrial Depolarization.
◉ 'QRS' complex is recorded when:
Answer: The ventricles are stimulated. (depolarization)
◉ The movement of charged particles across a cell membrane in
which the inside of the cell is restored to its negative charge is
called:
Answer: Repolarization
◉ 'ST' segment and 'T' Wave are recorded when
Answer: Ventricular Repolarization occurs
◉ Refractoriness
Answer: term used to describe the period of recovery that cells need
after being discharged before they are once again able to respond to
a stimulus
◉ Absolute Refractory Period (ARP)
AND ANSWERS FULLY VERIFIED
◉ Increased blood concentrations of ______ increase automaticity,
while decreased blood concentrations of _______ decrease
automaticity.
Answer: Calcium / Potassium
◉ When the inside of a cell is more negative than the outside, the
cell is said to be in a _______________ state
Answer: Polarized
◉ When a cell is at rest, ______ leaks out of it
Answer: K+ (Potassium)
◉ The movement of charged articles across a cell membrane that
causes the inside of the cell to become positive is called _______________
Answer: depolarization
◉ Depolarization, which is an electrical event, must take place
before the heart can ____________
Answer: contract and pump blood (mechanical)
, ◉ a 'P WAVE' represents:
Answer: Atrial Depolarization.
◉ 'QRS' complex is recorded when:
Answer: The ventricles are stimulated. (depolarization)
◉ The movement of charged particles across a cell membrane in
which the inside of the cell is restored to its negative charge is
called:
Answer: Repolarization
◉ 'ST' segment and 'T' Wave are recorded when
Answer: Ventricular Repolarization occurs
◉ Refractoriness
Answer: term used to describe the period of recovery that cells need
after being discharged before they are once again able to respond to
a stimulus
◉ Absolute Refractory Period (ARP)
