Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

18. The Heart

Electrocardiogram (ECG)

Anatomy & Physiology

18. The Heart

Electrocardiogram (ECG)

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Multiple Choice

Which instrument is primarily used to record the electrical activity of the heart during an electrocardiogram (ECG)?

Electrocardiograph

Spirometer

Stethoscope

Sphygmomanometer

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Verified step by step guidance

Step 1: Begin by understanding the purpose of an electrocardiogram (ECG). An ECG is a diagnostic tool used to measure and record the electrical activity of the heart over a period of time.

Step 2: Review the function of each instrument listed in the options: - Electrocardiograph: A device specifically designed to record the electrical activity of the heart during an ECG. - Spirometer: Measures lung function and respiratory volumes. - Stethoscope: Used to listen to internal body sounds, such as heartbeats and lung sounds. - Sphygmomanometer: Measures blood pressure.

Step 3: Match the purpose of the ECG (recording electrical activity of the heart) with the correct instrument. The electrocardiograph is the instrument that fulfills this purpose.

Step 4: Eliminate the other options based on their functions. Spirometer, stethoscope, and sphygmomanometer do not record electrical activity of the heart; they serve different diagnostic purposes.

Step 5: Conclude that the correct instrument for recording the electrical activity of the heart during an ECG is the electrocardiograph.