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

According to the length-tension relationship in muscle tissue, what is the optimal condition for generating maximum muscle tension?

When the muscle is rapidly shortening

When the muscle is at its resting length

When the muscle is fully contracted

When the muscle is fully stretched

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Verified step by step guidance

Understand the concept of the length-tension relationship: This principle explains how the force a muscle can generate depends on its length at the time of contraction. Muscle fibers have an optimal length at which they produce maximum tension.

Recognize the role of sarcomeres: Sarcomeres are the functional units of muscle fibers. The overlap between actin and myosin filaments within sarcomeres determines the amount of tension a muscle can generate.

Analyze the conditions: When a muscle is fully contracted, the actin and myosin filaments overlap excessively, reducing the number of cross-bridges that can form, which decreases tension. When a muscle is fully stretched, the filaments barely overlap, limiting cross-bridge formation and reducing tension.

Identify the optimal condition: At the muscle's resting length, there is an ideal overlap between actin and myosin filaments, allowing the maximum number of cross-bridges to form, which generates the greatest tension.

Conclude that the optimal condition for generating maximum muscle tension is when the muscle is at its resting length, as this provides the best alignment of filaments for cross-bridge formation.