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

10. Muscles

Muscle Actions

Anatomy & Physiology

10. Muscles

Muscle Actions

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Multiple Choice

What is the primary function of the sarcomere in muscle tissue?

It generates force for muscle contraction.

It produces energy through cellular respiration.

It transmits nerve impulses to muscle fibers.

It stores calcium ions for muscle relaxation.

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Verified step by step guidance

Understand the structure of the sarcomere: The sarcomere is the basic functional unit of striated muscle tissue, composed of actin (thin filaments) and myosin (thick filaments) arranged in a repeating pattern.

Learn the mechanism of muscle contraction: Muscle contraction occurs through the sliding filament theory, where actin and myosin filaments slide past each other, shortening the sarcomere and generating force.

Identify the role of the sarcomere: The primary function of the sarcomere is to generate force for muscle contraction by facilitating the interaction between actin and myosin filaments.

Clarify why other options are incorrect: The sarcomere does not produce energy through cellular respiration (this occurs in mitochondria), transmit nerve impulses (this is the role of neurons), or store calcium ions (this is the role of the sarcoplasmic reticulum).

Conclude with the correct answer: The sarcomere's primary function is to generate force for muscle contraction, as it is the site where the sliding filament mechanism occurs.