HCA100 Final Exam Practice Questions with Detailed Answers – Comprehensive Study Guide | Instant PDF Download

HCA100 Final Exam Practice Questions with
Detailed Answers – Comprehensive Study Guide |
Instant PDF Download

1. The _______ is the primary organ responsible for pumping blood
throughout the body.
A. Lungs
B. Heart
C. Kidneys
D. Liver
Answer: B

2. The layer of the heart that contracts to pump blood is the _______.
A. Epicardium
B. Pericardium
C. Myocardium
D. Endocardium
Answer: C

3. The _______ returns oxygen-poor blood from the lower part of the
body to the heart.
A. Pulmonary vein
B. Inferior vena cava
C. Superior vena cava
D. Aorta
Answer: B

4. The pulmonary veins deliver oxygenated blood to the _______
atrium.
A. Right
B. Left
C. Right ventricle

,D. Left ventricle
Answer: B

5. The ventricles’ inherent rate is between _______ bpm.
A. 60–100
B. 20–40
C. 40–60
D. 100–120
Answer: B

6. The two main phases of the cardiac cycle are _______ and _______.
A. Systole and Diastole
B. Depolarization and Repolarization
C. Contraction and Relaxation
D. P wave and T wave
Answer: A

7. Depolarization occurs when cardiac cells become _______ and
_______.
A. More negative; relax
B. Less negative; contract
C. Neutral; relax
D. Negative; contract
Answer: B

8. Normal sinus rhythm has a rate of _______ bpm and _______
intervals between P waves.
A. 50–90; irregular
B. 60–100; equal
C. 40–60; irregular
D. 100–120; equal
Answer: B

9. Each large box on an ECG, containing five small boxes, represents
_______ seconds.
A. 0.04

, B. 0.20
C. 1.0
D. 0.10
Answer: B

10. The P wave represents _______.
A. Atrial depolarization
B. Ventricular depolarization
C. Atrial repolarization
D. Ventricular repolarization
Answer: A

11. The QRS complex represents _______.
A. Atrial depolarization
B. Ventricular depolarization
C. Atrial repolarization
D. Ventricular repolarization
Answer: B

12. The QT interval is measured from the beginning of the _______ to
the end of the _______.
A. P wave; QRS
B. QRS; T wave
C. QRS; P wave
D. T wave; QRS
Answer: B

13. Lead I shows the difference in electrical voltage between the
_______ and _______ electrodes, with the positive pole on the _______.
A. Left arm; right arm; right arm
B. Right arm; left leg; left arm
C. Right arm; left leg; right arm
D. Left arm; right leg; left arm
Answer: B