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 type of muscle fiber uses anaerobic energy systems almost exclusively?

Type I fibers

Type IIb fibers

Cardiac muscle fibers

Type IIa fibers

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Verified step by step guidance

Understand the different types of muscle fibers: Type I, Type IIa, Type IIb, and cardiac muscle fibers. Each type has distinct characteristics and energy systems.

Type I fibers are known as slow-twitch fibers. They primarily use aerobic energy systems, relying on oxygen for energy production, and are suited for endurance activities.

Type IIa fibers are fast-twitch fibers that can use both aerobic and anaerobic energy systems. They are adaptable and can perform well in both endurance and strength activities.

Type IIb fibers are fast-twitch fibers that rely almost exclusively on anaerobic energy systems. They are designed for short bursts of power and strength, such as sprinting or heavy lifting, where oxygen is not the primary energy source.

Cardiac muscle fibers are specialized muscle fibers found in the heart. They primarily use aerobic energy systems to sustain continuous contractions necessary for pumping blood.