ANA 407 Lecture 11: ana407 lec 11
26 May 2016
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Document Summary
A joint is an articulation, usually between two bones. Joints determine the amount and direction of movements permitted between bones, and are sometimes classified by virtue of the types of movements permitted (e. g. , hinge, pivot, ball & socket; or uniaxial, multiaxial). Other classifications are based on the composition of joints: 1) fibrous joints are relatively immobile (e. g. , interosseous membrane; sutures) cartilaginous joints are those in which hyaline cartilage and/or fibrocartilage are interposed between the bones (e. g. , symphyses, epiphyseal plates) synovial joints permit relatively free movement. Each synovial joint possesses a space (synovial cavity) that contains synovial fluid, a viscous fluid not unlike the (uncooked) egg-white for which it is named. The bones participating in synovial joints are capped by smooth articular cartilages which are lubricated by a thin film of synovial fluid. The synovial fluid is secreted by the synovial membrane, which lies just inside the fibrous capsule of the joint. Describe the joints of the shoulder complex. a.
