PNB 2264 Study Guide - Midterm Guide: Connective Tissue, Chondroitin, Ultimate Tensile Strength
25 Mar 2019
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Document Summary
Articulations overview/axial musculoskeletal anatomy cartilage and bone: supporting connective tissue. Blast refers to cells actively secreted connective tissue matrix. Hyaline cartilage matrix: lots of dense, fine collagen perichondrium: dense connective tissue membrane that surrounds hyaline cartilage: strong, flexible, and smooth, ex:) articular cartilage reduces friction in joints. Fibrocartilage matrix: collagen, some elastic fibers: ex:) intervertebral discs resist compression due to high water content. Cartilaginous joints: synchondroses: hyaline cartilage connects bones or parts of bones immovable, ex:) epiphyseal plate, symphyses: fibrocartilage discs unite bones, slight movement, ex:) pubic symphysis, intervertebral. Synovial joints consist of joint cavity containing synovial fluid; freely moveable; most common joint; all share common anatomy. Temporomandibular articulation: between mandibular fossa of zygomatic process and mandibular condyles, combined hinge and gliding includes cushioning disc. Muscles/movements: digastricus opens jaw temporalis closes jaw, masseter closes jaw, pterygoids lateral excursion, depresses, retracts. Atlanto-occipital joint: between the atlas and occipital bone, double-condyloid joint.
