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

8. Joints

Introduction to Joints

Anatomy & Physiology

8. Joints

Introduction to Joints

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Multiple Choice

Articular cartilage found at the ends of long bones serves to:

produce red blood cells

store calcium and phosphate

reduce friction and absorb shock at the joint

connect muscles to bones

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Verified step by step guidance

Understand the structure and function of articular cartilage: Articular cartilage is a smooth, white tissue that covers the ends of long bones where they meet to form joints. Its primary role is to facilitate smooth movement and reduce friction between bones during joint motion.

Clarify the incorrect options: Articular cartilage does not produce red blood cells (this function is performed by red bone marrow) nor does it store calcium and phosphate (this is a function of the bone matrix). It also does not connect muscles to bones (this is the role of tendons).

Focus on the correct function: Articular cartilage reduces friction and absorbs shock at the joint, ensuring smooth movement and protecting the bones from damage during activities like walking, running, or jumping.

Relate the function to its composition: Articular cartilage is made of hyaline cartilage, which contains a dense extracellular matrix rich in collagen and proteoglycans. These components provide the tissue with its ability to resist compressive forces and maintain smooth surfaces.

Summarize the importance: The role of articular cartilage is critical for joint health. Damage or degeneration of this cartilage, as seen in conditions like osteoarthritis, can lead to pain, stiffness, and impaired movement.