Joints

the egg shaped articular surface of one bone fits into an oval concavity in another. - allow the moving bone to travel from side to side and back and forth, but prevents the bone from rotating around its long axis. - biaxial.

condylar joint

freely movable joints

diarthroses

bones joined by fibrous tissue; no joint cavity is present.

fibrous joint

Hold the bones together securely while also giving the rigid skeleton mobility.

functions of the joints

peg in socket fibrous joints that are found where the teeth meet the facial bones.

gomphoses

the cylindrical end of one bone fits into a trough shaped surface on another bone. angular movement is allowed in just one plane. - uniaxial

hinge joint

the articular capsule encloses this cavity, which contains lubricating synovial fluid secreted by the synovial membrane.

joint cavity

the sites where two or more bones meet.

joints

the fibrous layer of the capsule is usually reinforced with ________.

ligaments

articular surfaces are essentially flat, and only short slipping or gliding movements are allowed. - movements are nonaxial.

plane joint

each articular surface has both convex and concave areas. - biaxial joints that allow essentially the same movements as condylar joints.

saddle joints

slightly movable joints linked by discs of fibrocartilage.

symphyses

immovable joints

synarthroses

immovable joints linked by hyaline cartilage

synchondroses

fibrous joints in which the connecting fibers are longer than those of sutures; thus the join has more 'give.'

syndesmoses

a fluid secreted by the synovial membrane; lubricates joint surfaces and nourishes articular cartilage.

synovial fluid

joints in which the articulating bone ends are separated by a joint cavity containing synovial fluid.

synovial joints

membrane that lines the fibrous capsule of a synovial joint

synovial membrane

slightly movable joints

amphiarthroses

the joint surfaces are enclosed by a sleeve, or layer, of fibrous connective tissue.

articular capsule

hyaline cartilage covering the epiphysis of a bone at a joint.

articular cartilage

the spherical head of one bone fits into the round socket in another. - multiaxial joints that allow movement in all axes, including rotation, and are the most freely moving synovial joints.

ball and socket joint

bones united by cartilage; no joint cavity is present

cartilaginous joint