EXSS 175 Lecture Notes - Lecture 4: Synovial Joint, Joint Stability, Hinge Joint
29 Sep 2017
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Document Summary
What are the 3 structural classifications of joints? tissue. List the 3 structural types of fibrous joints. Thin layer of dense fibrous connective tissue unites bones of skull. If fuse completely in adults, becomes a synostosis (i. e. frontal bone) Ligament holds cone-shaped peg in bony socket. Bones tightly connected by hyaline cartilage or fibrocartilage. Secretes synovial fluid containing slippery hyaluronic acid. Supply oxygen and nutrient to articular cartilage. Articular capsule (there"s a lot about this one) Subdivide the synovial cavity to allow separate movements. The articular capsule surrounds a diarthrosis, encloses the synovial cavity, The articular capsule is composed of two layers: and unites the articulating bones. The flexibility of the fibrous capsule permits considerable movement at a joint, whereas its great tensile strength helps prevent bones from dislocating. Other capsule features include ligaments and articular fat pads. Fluid-filled sac like extensions of the joint capsule.
