2024 EKG KAISER EKG BASICS
EXAM WITH CORRECT ANSWERS
Which one of the following allows oxygenated blood to flow from the left
atria into the left ventricle?
Aortic valve
Mitral valve
Pulmonary valve
Tricuspid valve - CORRECT ANSWERS-Mitral valve
What property is the ability of a cardiac cell to initiate an electrical impulse?
Automaticity
Excitability
Conductivity
Contractility - CORRECT ANSWERS-Automaticity
What electrolyte is important in cardiac muscle contraction?
Calcium
Chloride
Glucose
Phosphorus - CORRECT ANSWERS-Calcium
What are ECG artifacts?
A normal finding
False cardiac waves
The action potential
Ventricular repolarization - CORRECT ANSWERS-False cardiac waves
Blood pressure may be affected by? (Select all that apply.)
Cardiac output
Mitral valve
Pacer cells
Peripheral resistance - CORRECT ANSWERS-Cardiac output
Peripheral resistance
Both atrial and ventricular chambers experience the diastole phase.
True
False - CORRECT ANSWERS-True
What vessel brings oxygenated blood from the lungs to the heart?
, Pulmonic valve
Pulmonary vein
Right atrium
Tricuspid valve - CORRECT ANSWERS-Pulmonary vein
Which artery is the most critical branch of the left main coronary artery?
Acute marginal artery
Circumflex artery
Left anterior descending artery
Posterior descending artery - CORRECT ANSWERS-Left anterior descending
artery
Which coronary artery supplies the SA and AV node in most of the
population?
Circumflex
Left Anterior Descending (LAD)
Posterior Descending Artery (PDA)
Right Coronary Artery (RCA) - CORRECT ANSWERS-Right Coronary Artery
(RCA)
What is the interval measurement that represents ventricular depolarization
and repolarization?
QRS complex
QT interval
PR interval
ST segment - CORRECT ANSWERS-QT interval
Select the two (2) arteries that arise off of the left main coronary artery.
Left Anterior Decending (LAD)
Circumflex
Posterior Descending Artery (PDA)
Right Coronary Artery (RCA) - CORRECT ANSWERS-Left Anterior Decending
(LAD)
Circumflex
In the first absolute phase of the refractory period, the heart cannot be
stimulated to depolarize, regardless of the stimulus strength.
True
False - CORRECT ANSWERS-True
What are the four (4) valves of the heart?
Tricuspid, pulmonic, mitral, aortic
Tricuspid, pulmonic, mitral, atria
Tricuspid, aortic, mitral, atria
Tricuspid, pulmonic, mitral, ventricle - CORRECT ANSWERS-Tricuspid,
pulmonic, mitral, aortic
EXAM WITH CORRECT ANSWERS
Which one of the following allows oxygenated blood to flow from the left
atria into the left ventricle?
Aortic valve
Mitral valve
Pulmonary valve
Tricuspid valve - CORRECT ANSWERS-Mitral valve
What property is the ability of a cardiac cell to initiate an electrical impulse?
Automaticity
Excitability
Conductivity
Contractility - CORRECT ANSWERS-Automaticity
What electrolyte is important in cardiac muscle contraction?
Calcium
Chloride
Glucose
Phosphorus - CORRECT ANSWERS-Calcium
What are ECG artifacts?
A normal finding
False cardiac waves
The action potential
Ventricular repolarization - CORRECT ANSWERS-False cardiac waves
Blood pressure may be affected by? (Select all that apply.)
Cardiac output
Mitral valve
Pacer cells
Peripheral resistance - CORRECT ANSWERS-Cardiac output
Peripheral resistance
Both atrial and ventricular chambers experience the diastole phase.
True
False - CORRECT ANSWERS-True
What vessel brings oxygenated blood from the lungs to the heart?
, Pulmonic valve
Pulmonary vein
Right atrium
Tricuspid valve - CORRECT ANSWERS-Pulmonary vein
Which artery is the most critical branch of the left main coronary artery?
Acute marginal artery
Circumflex artery
Left anterior descending artery
Posterior descending artery - CORRECT ANSWERS-Left anterior descending
artery
Which coronary artery supplies the SA and AV node in most of the
population?
Circumflex
Left Anterior Descending (LAD)
Posterior Descending Artery (PDA)
Right Coronary Artery (RCA) - CORRECT ANSWERS-Right Coronary Artery
(RCA)
What is the interval measurement that represents ventricular depolarization
and repolarization?
QRS complex
QT interval
PR interval
ST segment - CORRECT ANSWERS-QT interval
Select the two (2) arteries that arise off of the left main coronary artery.
Left Anterior Decending (LAD)
Circumflex
Posterior Descending Artery (PDA)
Right Coronary Artery (RCA) - CORRECT ANSWERS-Left Anterior Decending
(LAD)
Circumflex
In the first absolute phase of the refractory period, the heart cannot be
stimulated to depolarize, regardless of the stimulus strength.
True
False - CORRECT ANSWERS-True
What are the four (4) valves of the heart?
Tricuspid, pulmonic, mitral, aortic
Tricuspid, pulmonic, mitral, atria
Tricuspid, aortic, mitral, atria
Tricuspid, pulmonic, mitral, ventricle - CORRECT ANSWERS-Tricuspid,
pulmonic, mitral, aortic
