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Questions and Answers
What is the primary structural feature that differentiates synovial joints from fibrous and cartilaginous joints?
What is the primary structural feature that differentiates synovial joints from fibrous and cartilaginous joints?
- Type of ligaments used
- Connection type between bones
- Type of cartilage present
- Presence of a joint cavity (correct)
Which type of joint would be classified as diarthrosis?
Which type of joint would be classified as diarthrosis?
- Elbow joint (correct)
- Vertebral joints
- Pubic symphysis
- Sutures in the skull
Which of the following best describes amphiarthrosis?
Which of the following best describes amphiarthrosis?
- Slightly movable joints (correct)
- Joints allowing rotational movement
- Fully immovable joints
- Freely movable joints
In terms of joint stability and mobility, what generally occurs as mobility decreases?
In terms of joint stability and mobility, what generally occurs as mobility decreases?
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Which of the following types of connective tissue primarily holds the bones together at joints?
Which of the following types of connective tissue primarily holds the bones together at joints?
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Study Notes
Joint Overview
- Joints serve as points of connection between two bones.
- Connective tissues, such as ligaments, maintain joint stability by holding bones together.
General Functions of Joints
- Provide structural support, holding the skeleton in place.
- Facilitate mobility and flexibility within the skeletal system.
Classification of Joints
- Joints can be classified both structurally and functionally.
Structural Classification
- Fibrous Joints: Connected by dense connective tissue, offer limited or no movement.
- Cartilaginous Joints: Connected by cartilage, allowing slight movement.
- Synovial Joints: Characterized by a joint cavity, enabling a wide range of movement.
Functional Classification
- Synarthrosis: Joints that are immovable, providing stability.
- Amphiarthrosis: Joints that allow slight movement, offering a balance between stability and mobility.
- Diarthrosis: Freely movable joints, providing maximum mobility.
Movement and Mobility
- Joint mobility is inversely related to stability; as mobility decreases, stability increases.
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