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🧠 Bad Genius - 🧠 Physiology quiz 5: Cardiac Potentials and Electrocardiogram [page 557]

Status	Last Update	Fields
Published	01/14/2024	Which of the following is the primary cell type in AV nodes? A. PB. TransitionalC. PurkinjeD. Ordinary
Published	01/14/2024	Which of the following group of cells have the most developed dromotropic property? A. SA node B. bundle of His C. Terminal Purkinje NetworkD. Ordinar…
Published	01/14/2024	When SA node is sick, which of these will take over as a pacemaker? A. Internodal tracts B. AV node C. Bundle of His D. Terminal Purkinje Network
Published	01/14/2024	Compared to atrial muscles, the action potential of ventricular muscles has? A. Greater Overshoot B. Longer Plateau C. Faster Upstroke D. Shorter Dura…
Published	01/14/2024	According to Boron, the pacemaker potential is due to the interactions of these three currents: Inward funny current through HCN channels and inwardA.…
Published	01/14/2024	According to Guyton the pacemaker potential is due to the slow Na current:A. Via voltage gated Na+ channels B. Via already open Na+ channels C. And Ca…
Published	01/14/2024	Absolute refractory period of FRAP includes: A. Phases 0, 1, 2 and part of 3 B. Phases 0, 1 C. Phase 0 D. Phases 0,1, 2
Published	01/14/2024	The resting membrane potential of ventricular cells is primarily due to: A. K+ influx B. K+ efflux C. Na+ influx D. Na+ efflux
Published	01/14/2024	The SA node is the normal pacemaker of the heart because: A. It has abundant P cells B. It is located in the right atrium C. It exhibits pacemaker pot…
Published	01/14/2024	Negative resting membrane potential A. FRAP B. SRAP C. Both D. None
Published	01/14/2024	Overshoot potential A. FRAP B. SRAP C. Both D. None
Published	01/14/2024	Plateau phase A. FRAP B. SRAP C. Both D. None
Published	01/14/2024	K+ efflux to repolarize A. FRAP B. SRAP C. Both D. None
Published	01/14/2024	The mean QRS vector is normally directed: A. Anterior, Inferior, Rightward B. Anterior, Inferior, Leftward C. Posterior, Inferior, Rightward D. Poster…
Published	01/14/2024	These chest leads faces the epicardial surface of the right ventricle: A. V1 and V2 B. V3 and V4 C. V5 and V6 D. V1 to V6
Published	01/14/2024	Mer showed her ECG tracing to her SGD groupmates and asked Andre to compute for her heart rate. He counted 18 small boxes between 2 R waves. The heart…
Published	01/14/2024	This represents the duration of ventricular electrical systole: A. PR interval B. RR interval C. QRS interval D. QT interval
Published	01/14/2024	If the mean P vector is at (+)65°, the P wave is tallest in: A. Lead I B. Lead IIC. Lead aVF D. Lead aVR
Published	01/14/2024	The chest x-ray of LV showed left atrial hypertrophy. If an ECG were done on him, which of the following configurations would most likely be prolonged…
Published	01/14/2024	Given the following vectors for ventricular depolarization: Initial = (+)120°, Mean = (+)65°, Terminal = (-)15°. Which lead produces the tallest R wav…
Published	01/14/2024	Which of the following is true regarding cardiac depolarization? (Select All That Apply)1. It starts in the SA node2. Impulse is faster in AV node tha…
Published	01/14/2024	Which is true regarding FRAP and its ionic bases? (Select All That Apply)1. Upstroke - large and rapid Na+ influx 2. Initial repolarization - Closure …
Published	01/14/2024	Which of these cells exhibit both pacemaker potential and FRAP? (Select All That Apply)1. Atrial cells 2. Nodal cells3. Ventricular cells 4. Purkinje …
Published	01/14/2024	The rate of discharge of nodal cells can be increased by increasing the: (Select All That Apply)1. Resting membrane potential (less negative) 2. Slope…
Published	01/14/2024	The locations of the positive electrodes of the following leads of the hexaxial reference figure: (Select All That Apply)1. Lead I2. Lead II3. L…
Published	01/14/2024	Which of the following cells exhibit inotropic property? (Select All That Apply)1. P cells 2. Transitional cells 3. Purkinje cells 4. Working myo…
Published	01/14/2024	Dr. Karla suspects that Marlon has ventricular enlargement because his ECG shows prolonged: (Select All That Apply)1. P wave 2. QRS Interval 3. PR int…
Published	01/14/2024	If the mean P vector is at (-)78°, the P wave is inverted in: (Select All That Apply)1. Lead I 2. Lead II 3. Lead aVL 4. Lead aVR
Published	01/14/2024	Given the following vectors of ventricular depolarization: Initial value = (+)15° Mean value = (+)50° Terminal value = (-)20° In which of these you f…
Published	01/14/2024	Given the following vectors of ventricular depolarization: (Select All That Apply)Initial value = (+)15° Mean value = (+)50° Terminal value = (-)20° …
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