NHA EKG EXAM AND PRACTICE EXAM NEWEST 2026
TEST BANK| 3 VERSIONS WITH 300 REAL EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS/
ALREADY GRADED A+| NHA EKG CERTIFICATION
EXAM PREP 2026 (BRAND NEW!!)
1. What is the primary function of the right atrium?
A. Pump blood into the aorta
B. Receive deoxygenated blood from the body
C. Pump blood into the pulmonary artery
D. Receive oxygenated blood from the lungs
Answer: B
Rationale: The right atrium collects deoxygenated blood
returning from the body via the superior and inferior vena cava
before sending it to the right ventricle. The left atrium receives
oxygenated blood from the lungs .
1
,2. Which chamber of the heart pumps oxygenated blood into
the aorta?
A. Right atrium
B. Left atrium
C. Right ventricle
D. Left ventricle
Answer: D
Rationale: The left ventricle is the strongest chamber and is
responsible for pumping oxygenated blood into the systemic
circulation via the aorta. It has the thickest myocardium to
generate sufficient pressure .
3. What is the heart's primary pacemaker?
A. AV node
B. Bundle of His
C. SA node
D. Purkinje fibers
2
,Answer: C
Rationale: The sinoatrial (SA) node is the heart's natural
pacemaker, located in the right atrium. It generates electrical
impulses at 60-100 beats per minute and initiates each normal
cardiac cycle .
4. Which wave on the EKG represents atrial depolarization?
A. Q wave
B. R wave
C. P wave
D. T wave
Answer: C
Rationale: The P wave represents atrial depolarization, which is
the electrical activation of the atria leading to atrial contraction.
This precedes the QRS complex .
5. What does the QRS complex represent?
A. Atrial depolarization
3
, B. Ventricular depolarization
C. Atrial repolarization
D. Ventricular repolarization
Answer: B
Rationale: The QRS complex reflects the electrical activation
(depolarization) of the ventricles, which triggers ventricular
contraction. It is the largest waveform on the EKG .
6. What wave represents ventricular repolarization?
A. P wave
B. Q wave
C. R wave
D. T wave
Answer: D
Rationale: The T wave represents ventricular repolarization,
which is the electrical recovery of the ventricles as they prepare
for the next depolarization .
4
TEST BANK| 3 VERSIONS WITH 300 REAL EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS/
ALREADY GRADED A+| NHA EKG CERTIFICATION
EXAM PREP 2026 (BRAND NEW!!)
1. What is the primary function of the right atrium?
A. Pump blood into the aorta
B. Receive deoxygenated blood from the body
C. Pump blood into the pulmonary artery
D. Receive oxygenated blood from the lungs
Answer: B
Rationale: The right atrium collects deoxygenated blood
returning from the body via the superior and inferior vena cava
before sending it to the right ventricle. The left atrium receives
oxygenated blood from the lungs .
1
,2. Which chamber of the heart pumps oxygenated blood into
the aorta?
A. Right atrium
B. Left atrium
C. Right ventricle
D. Left ventricle
Answer: D
Rationale: The left ventricle is the strongest chamber and is
responsible for pumping oxygenated blood into the systemic
circulation via the aorta. It has the thickest myocardium to
generate sufficient pressure .
3. What is the heart's primary pacemaker?
A. AV node
B. Bundle of His
C. SA node
D. Purkinje fibers
2
,Answer: C
Rationale: The sinoatrial (SA) node is the heart's natural
pacemaker, located in the right atrium. It generates electrical
impulses at 60-100 beats per minute and initiates each normal
cardiac cycle .
4. Which wave on the EKG represents atrial depolarization?
A. Q wave
B. R wave
C. P wave
D. T wave
Answer: C
Rationale: The P wave represents atrial depolarization, which is
the electrical activation of the atria leading to atrial contraction.
This precedes the QRS complex .
5. What does the QRS complex represent?
A. Atrial depolarization
3
, B. Ventricular depolarization
C. Atrial repolarization
D. Ventricular repolarization
Answer: B
Rationale: The QRS complex reflects the electrical activation
(depolarization) of the ventricles, which triggers ventricular
contraction. It is the largest waveform on the EKG .
6. What wave represents ventricular repolarization?
A. P wave
B. Q wave
C. R wave
D. T wave
Answer: D
Rationale: The T wave represents ventricular repolarization,
which is the electrical recovery of the ventricles as they prepare
for the next depolarization .
4
