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 allows for twisting or rotational movement?

Saddle joint

Hinge joint

Pivot joint

Ball-and-socket joint

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Verified step by step guidance

Step 1: Understand the types of synovial joints and their movements. Synovial joints are classified based on the type of movement they allow, such as hinge, pivot, saddle, and ball-and-socket joints.

Step 2: Recall the function of a pivot joint. Pivot joints allow rotational movement around a single axis. For example, the joint between the first and second cervical vertebrae (the atlantoaxial joint) enables the head to rotate side-to-side.

Step 3: Compare the pivot joint to other types of joints mentioned in the problem. Saddle joints allow movement in two planes (e.g., thumb joint), hinge joints allow flexion and extension (e.g., elbow joint), and ball-and-socket joints allow movement in multiple directions (e.g., shoulder joint). None of these provide rotational movement like a pivot joint.

Step 4: Identify the correct answer based on the description of rotational movement. Since pivot joints are specifically designed for twisting or rotational movement, they are the correct answer.

Step 5: Reinforce the concept by considering real-life examples of pivot joints, such as the rotation of the forearm at the proximal radioulnar joint or the head's rotation at the atlantoaxial joint.