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

Which of the following best explains why improving muscular strength and endurance can help slow bone density loss?

Improved muscle endurance decreases blood flow to bones, preserving bone mass.

Stronger muscles directly convert into bone tissue, increasing bone density.

Muscle contractions reduce the need for calcium in bones, preventing bone loss.

Increased muscle activity places stress on bones, stimulating bone growth and maintenance.

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Verified step by step guidance

Understand the relationship between muscle activity and bone health: Bones respond to mechanical stress, such as the force exerted by muscle contractions during physical activity, by remodeling and strengthening themselves. This process is known as Wolff's Law.

Recognize that improving muscular strength and endurance increases the frequency and intensity of muscle contractions, which places stress on bones. This stress stimulates osteoblast activity, the cells responsible for bone formation.

Learn that osteoblasts deposit new bone tissue in response to mechanical stress, which helps maintain or increase bone density over time. This is a natural adaptation to ensure bones remain strong enough to handle increased loads.

Understand that regular physical activity, particularly weight-bearing exercises, enhances both muscle and bone health. These exercises include activities like resistance training, walking, or running, which promote bone remodeling and maintenance.

Conclude that the correct explanation is: Increased muscle activity places stress on bones, stimulating bone growth and maintenance. This process helps slow bone density loss and reduces the risk of conditions like osteoporosis.