Joint Classification Overview

Questions and Answers

Name the 2 categories of joints.

Structure/Composition, Action/Function

Name the 3 types of Structural joints.

Fibrous, Cartilaginous, Synovial

Structure/Composition joints are named this because -

Structure/composition refers to what the joint is made out of

Explain what a fibrous joint is.

Fibrous joints articulate (or attach) to another bone with fibrous connective tissue. Signup and view all the answers

What are some examples of fibrous joints?

Sutures of the skull, interosseous ligaments, teeth, distal tibulofibular joint Signup and view all the answers

Explain what a Cartilaginous joint is.

Cartilaginous joints articulate (or attach) to another bone by cartilage and are reinforced with fibrous tissue. Signup and view all the answers

What are some examples of cartilaginous joints?

Symphysis pubis, 1st rib to sternum, sacral coccygeal joint, fibrocartilage discs Signup and view all the answers

Explain what a Synovial joint is.

Synovial joints are characterized by 2 bones that articulate in a fibrous joint capsule, lined with membrane and surrounded by fluid. Signup and view all the answers

What are some examples of synovial joints?

Elbow, knee, wrist Signup and view all the answers

Action/Function joints are named this because -

Because they function as action levers Signup and view all the answers

Name the 3 types of Action/Functional Joints - Remember SAD.

Synarthrodial (Syn), Amphiarthrodial (Amphi), Diarthrodial (Di) Signup and view all the answers

Why remember SAD when referring to Action/Functional joints?

Because SAD is the order of joint movement - from least movable to most movable Signup and view all the answers

What is a characteristic of a Synarthrodial joint?

No movable joint or joint cavity Signup and view all the answers

What is an example of a Synarthrodial joint?

Teeth, 1st rib to sternum Signup and view all the answers

What is a characteristic of an Amphiarthrodial joint?

Slightly movable joint Signup and view all the answers

What is an example of an Amphiarthrodial joint?

Intervertebral discs, symphysis pubis, S.I. Joint (sacroiliac joint) Signup and view all the answers

What is a characteristic of a Diarthrodial joint?

Synovial joints, freely moving with a joint cavity between the articulation Signup and view all the answers

What is an example of a Diarthrodial joint?

Elbow, knee Signup and view all the answers

Study Notes

Joint Classification Overview

Joints classified by two main categories: Structure/Composition and Action/Function.

Structural/Composition Joints

Three types include:
- Fibrous
- Cartilaginous
- Synovial

Fibrous Joints

Defined as joints connected by fibrous connective tissue.
Examples include:
- Sutures of the skull
- Interosseous ligaments
- Teeth
- Distal tibiofibular joint

Cartilaginous Joints

Characterized by connection through cartilage, allowing little or no movement.
Examples include:
- Symphysis pubis
- 1st rib to sternum
- Sacral-coccygeal joint
- Fibrocartilage discs

Synovial Joints

Feature a fibrous joint capsule, lined with a membrane and filled with synovial fluid.
Articulating bones are capped with cartilage.
Examples include:
- Elbow
- Knee
- Wrist

Action/Function Joints

Known as action levers, enabling movement.
Three types are remembered using the acronym SAD:
- Synarthrodial (Syn)
- Amphiarthrodial (Amphi)
- Diarthrodial (Di)
SAD represents the order of mobility from least to most movable.

Synarthrodial Joints

Characteristics include:
- No movement and no joint cavity.
Example: Teeth, 1st rib to sternum.

Amphiarthrodial Joints

Defined by slight mobility.
Example: Intervertebral discs, symphysis pubis, sacroiliac joint.

Diarthrodial Joints

Freely moving joints featuring a joint cavity between articulations.
Example: Elbow, knee.

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Description

This quiz explores the classification of joints based on structure and function. Learn about the three main types of structural joints: fibrous, cartilaginous, and synovial, as well as their examples. Additionally, understand the functional classification of joints and their roles in movement.