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

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

Anatomy & Physiology

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

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Multiple Choice

How do your arm muscles cause your forearm bones to move?

By generating electrical impulses that directly move the bones

By secreting fluids that lubricate and slide the bones

By expanding and pushing the bones away from each other

By contracting and pulling on tendons attached to the bones

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Verified step by step guidance

Understand the basic anatomy of the arm: The arm muscles, such as the biceps brachii and triceps brachii, are connected to the forearm bones (radius and ulna) via tendons. Tendons are strong, fibrous connective tissues that attach muscles to bones.

Learn the mechanism of muscle contraction: Muscles contract by shortening their fibers. This occurs when actin and myosin filaments within the muscle cells slide past each other, a process powered by ATP and triggered by signals from the nervous system.

Recognize the role of tendons: When a muscle contracts, it pulls on the tendon attached to it. Tendons transmit the force generated by the muscle contraction to the bone, causing the bone to move.

Understand the movement of the forearm: For example, when the biceps brachii contracts, it pulls on the tendon attached to the radius, causing the forearm to flex (bend). Conversely, when the triceps brachii contracts, it pulls on the tendon attached to the ulna, causing the forearm to extend (straighten).

Conclude the process: Arm muscles cause forearm bones to move by contracting and pulling on tendons, which then move the bones. This is a coordinated process involving muscle contraction, tendon function, and joint movement.