MEDI111 Lecture Notes - Lecture 3: Coronal Suture, Periodontal Fiber, Synovial Fluid
6 Aug 2018
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Document Summary
Functional classifications of joints: based on amount of movement allowed by joint, three classifications, synarthroses immovable e. g. cranial bones, amphiarthroses slightly moveable e. g. pelvis, diarthrosis freely moveable e. g. shoulder. Fibrous joints: bones joined by dense, fibrous connective tissue, no joint cavity, most are synarthrotic (immovable, three types, sutures, syndesmoses, gomphoses. Sutures: rigid, interlocking joints containing short connective tissue fibres, e. g. coronal suture, allow for growth during youth. In middle age, sutures ossify and are called synotoses. Syndesmoses: bones connected by ligaments and bands of fibrous tissue, movment varies from slightly moveable to immovable, e. g. interosseous membrane between radius and ulna. Gomphoses: peg-in-socket joints of teeth in alveolar sockets, fibrous connection is periodontal ligament. Cartilaginous joints: bones united by cartilage, no joint cavity, two types, synchrondroses, symphyses. Sympheses: where fibrocartilage unites the bone, strong shockabsorbers, present in the midline, are ampitarthroses slightly moveable. Synovial joints: all are diarthrotic freely moveable.
