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

Saddle joints are found in which of the following locations in the human body?

Shoulder joint

Thumb (carpometacarpal joint of the first digit)

Elbow joint

Knee joint

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Verified step by step guidance

Step 1: Understand the concept of saddle joints. Saddle joints are a type of synovial joint that allow movement in two planes: flexion/extension and abduction/adduction. They are characterized by their unique shape, where one bone's surface is concave in one direction and convex in the other, resembling a saddle.

Step 2: Review the anatomy of the thumb (carpometacarpal joint of the first digit). This joint is located at the base of the thumb and is formed between the trapezium bone of the wrist and the first metacarpal bone. It is the most common example of a saddle joint in the human body.

Step 3: Compare the other options provided in the question. The shoulder joint is a ball-and-socket joint, the elbow joint is a hinge joint, and the knee joint is a modified hinge joint. None of these joints exhibit the saddle joint structure or movement capabilities.

Step 4: Confirm that the thumb's carpometacarpal joint fits the description of a saddle joint, as it allows the thumb to move in multiple directions, including opposition, which is a unique movement enabled by this joint type.

Step 5: Conclude that the correct answer is the thumb (carpometacarpal joint of the first digit), as it is the only location among the options provided where a saddle joint is found.