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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Multiple Choice

Which type of joint is the hip joint, and what types of movements does it allow?

Saddle joint; allows movement in two planes but not rotation.

Pivot joint; allows rotational movement around a single axis.

Hinge joint; allows only flexion and extension.

Ball-and-socket joint; allows movement in multiple directions including flexion, extension, abduction, adduction, rotation, and circumduction.

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Verified step by step guidance

Step 1: Begin by identifying the type of joint being discussed. The hip joint is anatomically classified as a ball-and-socket joint, which is a type of synovial joint.

Step 2: Understand the structure of a ball-and-socket joint. It consists of a spherical head (the femoral head in the hip joint) that fits into a cup-like socket (the acetabulum of the pelvis). This design allows for a wide range of motion.

Step 3: Review the types of movements allowed by ball-and-socket joints. These include flexion (decreasing the angle between two bones), extension (increasing the angle), abduction (moving a limb away from the midline), adduction (moving a limb toward the midline), rotation (turning a bone around its axis), and circumduction (a circular movement combining flexion, extension, abduction, and adduction).

Step 4: Compare the hip joint to other types of joints mentioned in the problem. For example, hinge joints (like the elbow) allow only flexion and extension, while pivot joints (like the atlantoaxial joint in the neck) allow rotational movement around a single axis. Saddle joints (like the thumb joint) allow movement in two planes but not rotation.

Step 5: Conclude that the hip joint is a ball-and-socket joint, which provides the most extensive range of motion among all joint types, making it essential for activities like walking, running, and dancing.