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

Electrical Conduction System of the Heart

Anatomy & Physiology

18. The Heart

Electrical Conduction System of the Heart

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Multiple Choice

How is cardiac output calculated in the context of heart physiology?

Cardiac output is calculated by subtracting stroke volume from heart rate.

Cardiac output is calculated by adding heart rate to stroke volume.

Cardiac output is calculated by dividing heart rate by stroke volume.

Cardiac output is calculated by multiplying heart rate by stroke volume.

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Verified step by step guidance

Understand the concept of cardiac output: Cardiac output is the volume of blood the heart pumps per minute and is a crucial measure of heart function.

Identify the components involved: Cardiac output is determined by two key factors - heart rate (the number of heartbeats per minute) and stroke volume (the amount of blood pumped by the heart with each beat).

Recognize the correct formula: Cardiac output is calculated using the formula: CO = HR × SV, where CO is cardiac output, HR is heart rate, and SV is stroke volume.

Apply the formula: To find cardiac output, multiply the heart rate (HR) by the stroke volume (SV). This multiplication gives the total volume of blood pumped by the heart per minute.

Consider physiological implications: Understanding how changes in heart rate or stroke volume affect cardiac output can help in assessing heart health and diagnosing potential cardiac issues.