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

4. Tissues & Histology

Types of Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Types of Muscle Tissue

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Multiple Choice

Which of the following activities would primarily use slow-twitch muscle fibers?

Marathon running

Weightlifting

High-intensity interval training

Sprinting

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Verified step by step guidance

Understand the characteristics of slow-twitch muscle fibers: Slow-twitch fibers, also known as Type I fibers, are designed for endurance and continuous activity. They are efficient at using oxygen to generate more fuel (ATP) for continuous, extended muscle contractions over a long time.

Consider the energy systems involved: Slow-twitch fibers rely on aerobic metabolism, which is the process of producing energy with the use of oxygen. This is ideal for activities that require sustained effort over a long period.

Analyze the activities listed: Marathon running is an endurance activity that requires sustained effort over a long duration, making it primarily reliant on slow-twitch muscle fibers.

Contrast with other activities: Weightlifting, high-intensity interval training, and sprinting are activities that rely more on fast-twitch muscle fibers, which are designed for short bursts of power and speed, utilizing anaerobic metabolism.

Conclude the analysis: Based on the characteristics of slow-twitch muscle fibers and the nature of the activities, marathon running is the activity that primarily uses slow-twitch muscle fibers.