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

Each thin filament in muscle tissue consists primarily of which protein?

Tropomyosin

Myosin

Actin

Titin

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Verified step by step guidance

Understand the structure of muscle tissue: Muscle tissue is composed of thick and thin filaments, which are part of the sarcomere, the functional unit of muscle contraction.

Identify the proteins associated with thin filaments: Thin filaments are primarily composed of actin, along with regulatory proteins such as tropomyosin and troponin.

Differentiate between actin and other proteins: Actin is the main structural protein in thin filaments, while tropomyosin and troponin regulate its interaction with myosin during contraction.

Recognize the role of myosin and titin: Myosin is the primary protein in thick filaments, responsible for generating force during contraction. Titin is a large protein that provides structural support and elasticity to the sarcomere.

Conclude that actin is the correct answer: Based on the composition of thin filaments, actin is the primary protein, while tropomyosin and troponin play regulatory roles.