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

3. Energy & Cell Processes

Introduction to Energy

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to Energy

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Multiple Choice

A sprinter would experience muscle fatigue sooner than a marathon runner due to ________.

greater reliance on anaerobic metabolism

increased oxygen delivery to muscles

lower production of lactic acid

higher number of slow-twitch muscle fibers

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Verified step by step guidance

Understand the difference between anaerobic and aerobic metabolism: Anaerobic metabolism occurs without oxygen and is used for short bursts of energy, producing lactic acid as a byproduct. Aerobic metabolism, on the other hand, relies on oxygen and is more efficient for sustained energy production.

Analyze the sprinter's activity: Sprinting is a high-intensity, short-duration activity that primarily relies on anaerobic metabolism to generate quick bursts of energy. This leads to faster accumulation of lactic acid, contributing to muscle fatigue.

Compare the marathon runner's activity: Marathon running is a low-intensity, long-duration activity that relies on aerobic metabolism. This allows for sustained energy production and slower accumulation of fatigue-related byproducts.

Evaluate the options: Greater reliance on anaerobic metabolism aligns with the sprinter's activity, as it explains the faster onset of muscle fatigue. Increased oxygen delivery to muscles, lower production of lactic acid, and higher number of slow-twitch muscle fibers are characteristics more relevant to marathon runners.

Conclude that the correct answer is 'greater reliance on anaerobic metabolism,' as it directly explains why a sprinter experiences muscle fatigue sooner than a marathon runner.