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

Introduction to Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Muscle Tissue

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Multiple Choice

Local muscles typically consist of which type of muscle fibers?

Type I (slow-twitch) fibers

Type IIb (fast glycolytic) fibers

Type IIa (fast oxidative) fibers

Cardiac muscle fibers

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Verified step by step guidance

Understand the concept of muscle fiber types: Muscle fibers are categorized based on their contraction speed, energy source, and endurance. The main types are Type I (slow-twitch), Type IIa (fast oxidative), and Type IIb (fast glycolytic). Cardiac muscle fibers are a separate category found in the heart.

Review the characteristics of Type I fibers: These are slow-twitch fibers that are highly resistant to fatigue, rely on aerobic metabolism, and are suited for endurance activities. They are commonly found in muscles responsible for posture and stability.

Examine the characteristics of Type IIa fibers: These fast oxidative fibers are intermediate in function, capable of both aerobic and anaerobic metabolism. They provide a balance between endurance and power.

Analyze the characteristics of Type IIb fibers: These fast glycolytic fibers are designed for short bursts of power and speed. They rely on anaerobic metabolism and fatigue quickly.

Determine the relevance of cardiac muscle fibers: Cardiac muscle fibers are specialized for the heart's rhythmic contractions and are not typically found in skeletal muscles. They are distinct from the other muscle fiber types mentioned.