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

Cardiac Cycle

Anatomy & Physiology

18. The Heart

Cardiac Cycle

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Multiple Choice

Which law states that stroke volume is determined by the end-diastolic volume?

Henry's Law

Boyle's Law

Frank-Starling Law

Laplace's Law

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Verified step by step guidance

Identify the key terms in the question: 'stroke volume' and 'end-diastolic volume'. These are important concepts in cardiovascular physiology.

Understand that 'stroke volume' refers to the amount of blood ejected by the left ventricle of the heart in one contraction, while 'end-diastolic volume' is the volume of blood in the ventricle at the end of filling (diastole).

Recognize that the relationship between stroke volume and end-diastolic volume is described by a specific physiological principle.

Recall that the Frank-Starling Law of the heart states that the stroke volume of the heart increases in response to an increase in the volume of blood filling the heart (the end-diastolic volume), due to the myocardial fibers being stretched to a more optimal length for contraction.

Conclude that the Frank-Starling Law is the correct principle that explains how stroke volume is determined by the end-diastolic volume, as it describes the intrinsic ability of the heart to adapt to changing volumes of incoming blood.