Anatomy and Cell Biology 3319 Chapter Notes -Supraspinatus Muscle, Iliofemoral Ligament, Infraspinatus Muscle
3 Mar 2014
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Document Summary
Joints: a joint is the point at which two bones articulate with each other, degree of movement at a joint is determined by the structure of the joint. Gomphoses: peg-in-socket joint, only example: articulation of a tooth within its socket, connecting ligament: periodontal ligament. Cartilaginous joints: articulating bones are united by cartilage, two types. Lack a joint cavity and are not highly moveable: synchondroses, symphyses. Joint where hyline cartilage units the bone: ex. Epiphyseal plates: functionally, these plates are classified as immovable synarthroses, ex. First rib"s costal cartilage & manubrium of sternum. Synovial joints: most moveable joints of the body and are all diarthroses (freely moveable, contains fluid-filled joint cavity, define most joints of the body & especially ones in the limbs. General structure: articular cartilage, ends of opposing bones are covered by articular cartilages composed of hyaline cartilage, spongy cushions absorb compressive forces on joint & keep bone ends from being crushed.
