Question 1
Which of the following correctly describes the relative refractory period?
◦ It is the period in which the heart function stops temporarily to allow impulse transmission to occur.
◦ It is the period in which no impulses at all can cause another depolarization.
◦ It is the period in which only a strong impulse can cause another depolarization.
◦ It is the period in which even a weak impulse can cause another depolarization.
Question 2
The relative refractory period extends from the
◦ beginning of the QRS complex to the upstroke of the T wave.
◦ upstroke of the T wave to the end of the T wave.
◦ beginning of the T wave to the beginning of the next QRS complex.
◦ beginning of the P wave to the beginning of the QRS complex.