BSC 181 Study Guide - Quiz Guide: Gout, Synovial Joint, Dense Irregular Connective Tissue
Document Summary
Articulation: site where two or more bones meet. Functions of joints: give skeletal mobility, hold skeleton together. Two classifications: functional: determines amount of movement in joint, structural: what the joint is made out of. Based on amount of movement the joint allows. Three functional classifications: synarthroses: immovable joints, amphiarthroses: slightly moveable joints, diarthrosis: freely moveable joints. Articular discs (menisci: fi(cid:271)(cid:396)o(cid:272)a(cid:396)tilage sepa(cid:396)ates a(cid:396)ti(cid:272)ula(cid:396) su(cid:396)fa(cid:272)es to i(cid:373)p(cid:396)o(cid:448)e (cid:862)fit(cid:863) of (cid:271)o(cid:374)e e(cid:374)ds, sta(cid:271)ilize joint, and reduce wear and tear. Bursae: sacs lined with synovial membrane (contain synovial fluid, reduce friction where ligaments, muscles, skin, tendons, or bones rub together. Tendon sheaths: elongated bursa wrapped completely around tendon subjected to friction. Three stabilizing factors at synovial joints: shapes of articular surfaces: minor role, ligament number and location: minor role, muscle tendons that cross joint: most important role. Muscle tone keeps tendons taut: extreme important in reinforcing shoulder and knee joints and arches of the foot.
