Classification of Joints Flashcards

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Questions and Answers

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.

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?

Fibrous, cartilaginous, and synovial.

Describe the main features of the fibrous class of joints.

United by dense regular fibrous connective tissue, few or no cartilage cells, no joint cavity, little or no movement. Signup and view all the answers

Name examples of fibrous joints.

Sutures between the bones of the skull and gomphoses. Signup and view all the answers

Describe the main features of the cartilaginous class of joints.

United by cartilage, no joint cavity, little or no movement. Signup and view all the answers

What are the primary and secondary subclasses of the structural joint classification?

Cartilaginous. Signup and view all the answers

What is the difference between primary and secondary cartilaginous joints?

Primary is hyaline cartilage, secondary is fibrocartilage. Signup and view all the answers

Name an example of a primary cartilaginous joint.

Costalchondral. Signup and view all the answers

Name an example of a secondary cartilaginous joint.

Intervertebral joint. Signup and view all the answers

Describe the main features of synovial joints.

Separated by a synovial joint cavity, offers free movement, located primarily in the appendicular skeleton. Signup and view all the answers

What two classes of structural joint have no joint cavity?

Fibrous and cartilaginous. Signup and view all the answers

Name the three classes of functional joints.

Synarthrosis, amphiarthrosis, diarthrosis. Signup and view all the answers

Define synarthrosis.

A class of functional joint with no or little movement. Signup and view all the answers

Name examples of synarthrosis joints.

Sutures and gomphoses. Signup and view all the answers

Define amphiarthrosis.

A class of functional joint with some movement. Signup and view all the answers

Name examples of amphiarthrosis joints.

Pubic symphysis and intervertebral discs. Signup and view all the answers

Define diarthrosis.

A class of functional joint that offers free movement. Signup and view all the answers

Name examples of diarthrosis joints.

Hip and knee. Signup and view all the answers

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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Description

Test your knowledge on the classification of joints with these flashcards. Understand the distinctions between structural and functional classifications, and explore the subclasses of structural joints. Ideal for anatomy students and anyone interested in the skeletal system.