ARTICULATIONS Joints in the Human Body. WHAT ARE ARTICULATIONS? Articulations are joints Places where two or more bones meet.

ARTICULATIONSJoints in the Human Body

WHAT ARE ARTICULATIONS?

Articulations are joints

Places where two or more bones meet

THERE ARE 3 MAJOR CATEGORIES:

Fibrous joints, aka synarthrotic joints

Cartilaginous joints, aka amphiarthrotic

Synovial joints, aka diarthrotic joints

FIBROUS JOINTS - SYNARTHROTIC

Two or more bones joined by fibrous connective tissue

Can have very limited but usually no motion

THREE TYPES OF FIBROUS JOINTS

SUTURES: located between bones of the skull. They are immovable.

FONTANELS are areas of unossified bone in children under two years old.

SYNDESMOSES

In a syndesmosis joint, bones are farther apart than in sutures and they are also connected by ligaments.

GOMPHOSES

A Gomphosis is a “peg” held in a socket by fibrous tissue. Teeth held in the maxilla and mandible by periodontal ligaments are examples..

REVIEW: THE THREE FIBROUS JOINTS ARE????

Sutures

Syndesmoses

gomphoses

THE CARTILAGINOUS

JOINTSAMPHIARTHROTIC JOINTS

CARTILAGINOUS JOINTS: Two or more bones connected by

hyaline or fibrocartilage.

This type of joint provides limited motion

TWO TYPES OF CARTILAGINOUS JOINTS:

Synchondroses:

Bones connected by hyaline cartilage

Little or no motion

Ex: epiphyseal plates

Symphyses:

Bones connected by fibrocartilage

Provide slight motion

Ex: vertebrae and pubic bones