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 does the arrangement of a muscle's fascicles affect its function?

It determines the muscle's range of motion and power.

It regulates the amount of blood supplied to the muscle.

It controls the speed of nerve impulses in the muscle.

It dictates the type of neurotransmitter released at the neuromuscular junction.

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Verified step by step guidance

Understand the structure of a muscle: Muscles are composed of bundles of fibers called fascicles, which are arranged in specific patterns. These patterns include parallel, pennate, convergent, and circular arrangements.

Analyze the relationship between fascicle arrangement and range of motion: Fascicles arranged in parallel allow for greater shortening of the muscle, which increases the range of motion. For example, muscles with long parallel fascicles can contract over a greater distance.

Examine the relationship between fascicle arrangement and power: Pennate muscles, where fascicles attach obliquely to a central tendon, generate more power because they pack more fibers into a given area. However, their range of motion is limited compared to parallel muscles.

Eliminate irrelevant options: The arrangement of fascicles does not regulate blood supply, control nerve impulse speed, or dictate neurotransmitter release. These functions are governed by other physiological systems, such as the circulatory and nervous systems.

Conclude the correct answer: The arrangement of a muscle's fascicles primarily determines its range of motion and power, as these are directly influenced by the structural organization of the muscle fibers.