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 the arms to move in a circular motion?

Sliding

Ellipsoidal

Hinge

Ball-and-socket

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Verified step by step guidance

Step 1: Understand the types of joints in the human body. Joints are classified based on their structure and the range of motion they allow. Common types include hinge joints, ball-and-socket joints, ellipsoidal joints, and sliding joints.

Step 2: Review the ball-and-socket joint. This type of joint allows movement in multiple planes, including rotation, making it ideal for circular motion. Examples include the shoulder and hip joints.

Step 3: Compare the ball-and-socket joint to other types of joints mentioned in the problem: Sliding joints allow limited gliding movements, ellipsoidal joints permit movement in two planes but not rotation, and hinge joints allow movement in one plane (like opening and closing a door).

Step 4: Relate the ball-and-socket joint to the arm's circular motion. The shoulder joint is a ball-and-socket joint, where the rounded head of the humerus fits into the concave socket of the scapula, enabling the arm to move in a circular motion.

Step 5: Conclude that the ball-and-socket joint is the correct answer because it provides the necessary range of motion for circular movements, unlike the other joint types listed.