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