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

Joint Movements

Anatomy & Physiology

8. Joints

Joint Movements

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1:53 minutes

Problem 16

Textbook Question

Movements that occur at the shoulder and the hip represent the actions that occur at a____joint.
(a) hinge
(b) ball-and-socket
(c) pivot
(d) plane

Verified step by step guidance

Understand the types of synovial joints: Synovial joints are classified into several types based on their structure and the movements they allow. Common types include hinge, ball-and-socket, pivot, and plane joints.

Review the characteristics of each joint type: Hinge joints allow movement in one plane (e.g., elbow), ball-and-socket joints allow movement in multiple planes and rotation (e.g., shoulder and hip), pivot joints allow rotational movement (e.g., neck), and plane joints allow gliding movements (e.g., intercarpal joints).

Identify the movements at the shoulder and hip: These joints allow flexion, extension, abduction, adduction, circumduction, and rotation, which are characteristic of ball-and-socket joints.

Match the joint type to the description: Based on the movements allowed at the shoulder and hip, determine which joint type corresponds to these actions.

Conclude that the correct answer is the joint type that allows the described range of motion and rotation, which is characteristic of ball-and-socket joints.

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Key Concepts

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

Types of Joints

Joints are classified based on their structure and the type of movement they allow. The main types include hinge joints, which permit movement in one direction; ball-and-socket joints, which allow for rotational movement in multiple directions; pivot joints, which enable rotation around a single axis; and plane joints, which allow for gliding movements. Understanding these classifications is essential for identifying the correct joint type in the question.

Ball-and-Socket Joint

A ball-and-socket joint is characterized by a spherical head of one bone fitting into a cup-like socket of another, allowing for a wide range of motion in multiple directions. This type of joint is found in the shoulder and hip, enabling movements such as rotation, flexion, extension, abduction, and adduction. Recognizing this joint type is crucial for answering the question correctly.

Movement at the Shoulder and Hip

The shoulder and hip joints are both classified as ball-and-socket joints due to their structure and the extensive range of motion they provide. Movements at these joints include raising the arm or leg, rotating the limb, and moving it away from or towards the body. Understanding the specific movements facilitated by these joints helps in identifying their classification in the context of the question.