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

Classification of Joints

Anatomy & Physiology

8. Joints

Classification of Joints

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Problem 7

Textbook Question

Which of the following is not a function of synovial fluid?
(a) Shock absorption
(b) Nutrient distribution
(c) Maintenance of ionic balance
(d) Lubrication of the articular surfaces
(e) Waste disposal

Verified step by step guidance

Understand the role of synovial fluid: Synovial fluid is a viscous fluid found in synovial joints, and its primary functions include reducing friction, distributing nutrients, and absorbing shocks during movement.

Review the listed functions: Analyze each option provided in the question to determine whether it aligns with the known functions of synovial fluid.

Evaluate option (a): Shock absorption is a valid function of synovial fluid as it helps cushion the joints during movement.

Evaluate option (b): Nutrient distribution is another valid function of synovial fluid, as it provides nutrients to the cartilage in the joint.

Evaluate option (c): Maintenance of ionic balance is not a recognized function of synovial fluid, as this is typically regulated by other systems in the body, such as the kidneys and blood plasma.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Synovial Fluid Functions

Synovial fluid is a viscous liquid found in the cavities of synovial joints. Its primary functions include lubrication of articular surfaces to reduce friction during movement, shock absorption to protect joints from impact, and nutrient distribution to nourish cartilage. Understanding these functions is crucial for identifying which options in the question are not typical roles of synovial fluid.

Articular Surfaces

Articular surfaces refer to the areas of bones that come into contact at a joint. These surfaces are covered with articular cartilage, which is smooth and helps facilitate movement. The lubrication provided by synovial fluid is essential for maintaining the health and function of these surfaces, preventing wear and tear during physical activity.

Ionic Balance in Joints

Ionic balance in joints refers to the maintenance of appropriate concentrations of ions, such as sodium and potassium, within the synovial fluid. While synovial fluid plays a role in nutrient distribution and waste disposal, the specific function of maintaining ionic balance is more closely associated with the overall homeostasis of the body rather than a direct function of synovial fluid itself.