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Questions and Answers
What are the two forms of joint classification?
What are the two forms of joint classification?
- Dynamic and static
- Synovial and non-synovial
- Connective and supportive
- Structural and functional (correct)
Describe the difference between the structural and functional classification of joints.
Describe the difference between the structural and functional classification of joints.
Structural is based on the major connective tissue type that binds together the bones. Function is based on the degree of motion offered by the joint.
What are the three subclasses of the structural classification of joints?
What are the three subclasses of the structural classification of joints?
Fibrous, cartilaginous, and synovial.
Describe the main features of the fibrous class of joints.
Describe the main features of the fibrous class of joints.
Name examples of fibrous joints.
Name examples of fibrous joints.
Describe the main features of the cartilaginous class of joints.
Describe the main features of the cartilaginous class of joints.
What are the primary and secondary subclasses of the structural joint classification?
What are the primary and secondary subclasses of the structural joint classification?
What is the difference between primary and secondary cartilaginous joints?
What is the difference between primary and secondary cartilaginous joints?
Name an example of a primary cartilaginous joint.
Name an example of a primary cartilaginous joint.
Name an example of a secondary cartilaginous joint.
Name an example of a secondary cartilaginous joint.
Describe the main features of synovial joints.
Describe the main features of synovial joints.
What two classes of structural joint have no joint cavity?
What two classes of structural joint have no joint cavity?
Name the three classes of functional joints.
Name the three classes of functional joints.
Define synarthrosis.
Define synarthrosis.
Name examples of synarthrosis joints.
Name examples of synarthrosis joints.
Define amphiarthrosis.
Define amphiarthrosis.
Name examples of amphiarthrosis joints.
Name examples of amphiarthrosis joints.
Define diarthrosis.
Define diarthrosis.
Name examples of diarthrosis joints.
Name examples of diarthrosis joints.
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Study Notes
Joint Classification Overview
- Joints are classified into two main forms: structural and functional.
Structural Joint Classification
- Based on the connective tissue type binding the bones.
- Three subclasses: fibrous, cartilaginous, and synovial.
Fibrous Joints
- Composed of dense regular fibrous connective tissue.
- Typically have few or no cartilage cells.
- Lack a joint cavity.
- Allow little to no movement.
- Examples include sutures of the skull and gomphoses (tooth sockets).
Cartilaginous Joints
- United by cartilage, without a joint cavity.
- Allow little to no movement.
- Two subclasses:
- Primary cartilaginous joints are made of hyaline cartilage (e.g., costalchondral).
- Secondary cartilaginous joints are constructed of fibrocartilage (e.g., intervertebral joints).
Synovial Joints
- Defined by a synovial joint cavity, allowing for freedom of movement.
- Primarily found in the appendicular skeleton.
- Distinguished features include synovial fluid, a joint capsule, and articular cartilage.
Functional Joint Classification
- Divided into three classes:
- Synarthrosis: joints with no or limited movement (e.g., sutures and gomphoses).
- Amphiarthrosis: joints that permit some movement (e.g., pubic symphysis and intervertebral discs).
- Diarthrosis: joints that allow free movement (e.g., hip and knee joints).
Key Distinctions
- Fibrous and cartilaginous joints do not possess a joint cavity, distinguishing them from synovial joints.
- Synarthrosis and amphiarthrosis both restrict movement, while diarthrosis facilitates significant mobility.
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