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

Structural Class: Cartilaginous Joints

Anatomy & Physiology

8. Joints

Structural Class: Cartilaginous Joints

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Problem 15

Textbook Question

Which factors contribute to the stability of the hip joint?

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Understand the anatomy of the hip joint: The hip joint is a ball-and-socket joint formed by the articulation of the head of the femur (thigh bone) and the acetabulum of the pelvis. Its stability is influenced by structural and functional factors.

Examine the role of the bony structure: The deep socket of the acetabulum and the spherical shape of the femoral head provide inherent stability to the joint by limiting excessive movement.

Analyze the contribution of ligaments: Several strong ligaments, such as the iliofemoral, pubofemoral, and ischiofemoral ligaments, reinforce the joint capsule and prevent dislocation by restricting certain movements.

Consider the role of surrounding muscles: Muscles like the gluteal group, iliopsoas, and adductors provide dynamic stability by maintaining tension and controlling movement during activities like walking or running.

Evaluate the importance of the labrum: The acetabular labrum, a ring of cartilage surrounding the acetabulum, deepens the socket and enhances joint stability by increasing the surface area for articulation and reducing stress on the joint.

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Key Concepts

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

Anatomy of the Hip Joint

The hip joint is a ball-and-socket joint formed by the acetabulum of the pelvis and the head of the femur. Its structure allows for a wide range of motion while maintaining stability. Key anatomical features, such as ligaments, cartilage, and surrounding muscles, play a crucial role in supporting the joint and preventing dislocation.

Ligamentous Support

Ligaments are strong, fibrous tissues that connect bones to other bones, providing stability to the hip joint. The iliofemoral, pubofemoral, and ischiofemoral ligaments are particularly important, as they help limit excessive movement and maintain joint integrity during various activities, such as walking and running.

Muscle Dynamics

The muscles surrounding the hip joint, including the gluteals, iliopsoas, and adductors, contribute significantly to its stability. These muscles work in coordination to control movement and maintain proper alignment of the joint, especially during dynamic activities. Strength and flexibility in these muscle groups are essential for preventing injuries and ensuring joint stability.

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Textbook Question

What is/are the function(s) of synovial fluid?

The articulating ends of bones of synovial joints are covered in______. The remaining internal surfaces of the joint are lined by the_____, which produces synovial fluid. The entire joint is encased by the_____, which is composed of dense, irregular collagenous connective tissue.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Cartilaginous joints are synarthroses.

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Textbook Question

Explain how the structure of each of the following joint types follows its function.

Cartilaginous joint

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