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site where two or more bones meet
Functions of joints
Functions of joints:
Give skeleton mobility
Hold skeleton together
Functional Classification of Joints
slightly movable (amphiarthrosis)
freely movable (diarthrosis)
Fibrous (mainly immoveable)
Cartilaginous (partially moveable)
Synovial (freely moveable)
Joint held together with very short,interconnecting fibers, and bone edgesinterlock. Found only in the skull.
Joint held together by a ligament.
Fibrous tissue can vary in length, but is longer than in sutures.
“Peg in socket” fibrous joint.
Periodontalligament holds tooth in socket.
Bones united by hyaline cartilage
Bones united by fibrocartilage
All are freely moveable (diarthrotic)
Include all limb joints; most joints of the body
--Joint capsule lined with synovial membrane
--The synovial membrane produces fluid
--Ligaments (inside and outside joint)
--Extra fibrous sacs lined with synovial membranes, and containing synovial fluid
--Placed where ligaments, muscles, skin, tendons, or bones rub together to reduce friction at joint
LIL INFO ON JOINTS