Classification of Joints

What kind of movement do symphysis permit?

Amphiatrotic joints because they allow slight movements

What kind of movement do synovial joints permit?

Synovial joints allow free movement and are called diarthrotic.

Joints are also called

articulations which are functional junctions between bones

In a synchondrosis,

bands of hyaline cartilage unite bones.

Joints can also be grouped according to the

degree of movement possible at the bony junctions.

Functions of joints

Joints bind parts of the skeletal system, make possible bone growth, permit parts of the skeleton to change shape during childbirth, and enable the body to move in response to skeletal muscle contractions.

In syndesmosis, bones are bound by a

sheet of fiberous connective tissue (interosseous membrane) or bundle of fiberous connective tissue (interosseous ligament).

Two examples of symphyses are the

symphysis pubis and intervertebral joints.

Immovable joints are called

synarthrotic.

Two types of cartilaginous joints are

synchondroses, and symphyses.

The three types of fibrous joints are

syndesmosis, suture, and gomphosis.

What kind of movement does syndesmosis permits?

Because a syndesmosis permits slight movement, it is called amphiarthrotic.

What kind of movements do sutures permit?

Because sutures are immovable, they are called synarthrotic.

What kind of movement do synchondrosis permit?

Synchondroses do not permit movement and are therefore synarthrotic.

An example of a gomphosis is

a tooth in a socket.

A periodontal ligament is

a structure that firmly attaches a tooth to the jaw.

Slightly movable joints are called

amphiarthrotic.

Synovial joints consist of

articular cartilage, a joint capsule, and a synovial membrane

Fontanels allow the skull to

change shape slightly during childbirth.

Freely movable joints are called

diarthrotic.

Two examples of synchondroses are

epiphyseal plates and the joint between the first rib and manubrium.

Three general groups of joints are

fibrous, cartilaginous, and synovial.

Sutures are only between

flat bones of the skull.

. Bones of cartilaginous joints are joined by

hyaline cartilage or fibrocartilage.

A gomphosis is a

joint formed by the union of a cone-shaped bony process in a bony socket.

An example of a suture is the

parietal suture.

Most joints are

synovial.

Many synchondroses are

temporary structures and disappear during growth.

In a symphysis,

the articular surfaces of bones are covered with a thin layer of hyaline cartilage and the cartilage is attached to a pad of springy fibrocartilage.

Fibrous joints are so named because

the dense connective tissue holding them together contains many collagenous fibers.

A sutural ligament is a

thin layer of dense connective tissue that joins flat bones of the skull together.

An example of a syndesmosis is between the

tibia and fibula.