DAANCE (ALL MODULES) NEWEST 2026/ 2027 ACTUAL
EXAM TEST BANK| COMPLETE 950 REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+|
DAANCE CERTIFICATION EXAM PREP (NEWEST!!)
Question 1
Which chamber of the heart pumps oxygenated blood into the
systemic circulation?
A) Right atrium
B) Right ventricle
C) Left atrium
D) Left ventricle
Correct Answer: D
Rationale: The left ventricle pumps oxygenated blood through
the aorta into the systemic circulation. It has the thickest
1
,myocardial wall to generate the pressure needed for systemic
perfusion. The right ventricle pumps deoxygenated blood to the
lungs via the pulmonary artery .
Question 2
What is the primary pacemaker of the heart?
A) Atrioventricular (AV) node
B) Bundle of His
C) Sinoatrial (SA) node
D) Purkinje fibers
Correct Answer: C
Rationale: The sinoatrial (SA) node is the primary pacemaker,
generating electrical impulses at 60-100 beats per minute. The
AV node (40-60 bpm), Bundle of His, and Purkinje fibers (20-40
bpm) are secondary pacemakers that take over if the SA node
fails .
2
,Question 3
Which ECG waveform represents ventricular depolarization?
A) P wave
B) QRS complex
C) T wave
D) U wave
Correct Answer: B
Rationale: The QRS complex represents ventricular
depolarization (contraction). The P wave represents atrial
depolarization. The T wave represents ventricular repolarization.
The U wave is a small wave sometimes seen after the T wave, of
uncertain significance .
3
, Question 4
What is the normal PR interval duration?
A) 0.04-0.10 seconds
B) 0.12-0.20 seconds
C) 0.20-0.30 seconds
D) 0.30-0.40 seconds
Correct Answer: B
Rationale: The normal PR interval (from P wave onset to QRS
onset) is 0.12-0.20 seconds (120-200 milliseconds). Prolonged
PR interval (>0.20 seconds) indicates first-degree AV block.
Short PR interval (<0.12 seconds) may indicate pre-excitation
syndromes (e.g., WPW) .
Question 5
What is the normal resting heart rate for an adult?
4
EXAM TEST BANK| COMPLETE 950 REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+|
DAANCE CERTIFICATION EXAM PREP (NEWEST!!)
Question 1
Which chamber of the heart pumps oxygenated blood into the
systemic circulation?
A) Right atrium
B) Right ventricle
C) Left atrium
D) Left ventricle
Correct Answer: D
Rationale: The left ventricle pumps oxygenated blood through
the aorta into the systemic circulation. It has the thickest
1
,myocardial wall to generate the pressure needed for systemic
perfusion. The right ventricle pumps deoxygenated blood to the
lungs via the pulmonary artery .
Question 2
What is the primary pacemaker of the heart?
A) Atrioventricular (AV) node
B) Bundle of His
C) Sinoatrial (SA) node
D) Purkinje fibers
Correct Answer: C
Rationale: The sinoatrial (SA) node is the primary pacemaker,
generating electrical impulses at 60-100 beats per minute. The
AV node (40-60 bpm), Bundle of His, and Purkinje fibers (20-40
bpm) are secondary pacemakers that take over if the SA node
fails .
2
,Question 3
Which ECG waveform represents ventricular depolarization?
A) P wave
B) QRS complex
C) T wave
D) U wave
Correct Answer: B
Rationale: The QRS complex represents ventricular
depolarization (contraction). The P wave represents atrial
depolarization. The T wave represents ventricular repolarization.
The U wave is a small wave sometimes seen after the T wave, of
uncertain significance .
3
, Question 4
What is the normal PR interval duration?
A) 0.04-0.10 seconds
B) 0.12-0.20 seconds
C) 0.20-0.30 seconds
D) 0.30-0.40 seconds
Correct Answer: B
Rationale: The normal PR interval (from P wave onset to QRS
onset) is 0.12-0.20 seconds (120-200 milliseconds). Prolonged
PR interval (>0.20 seconds) indicates first-degree AV block.
Short PR interval (<0.12 seconds) may indicate pre-excitation
syndromes (e.g., WPW) .
Question 5
What is the normal resting heart rate for an adult?
4
