PHED-1507EL Study Guide - Midterm Guide: Sagittal Plane, Flat Bone, Synovial Joint
12 Sep 2018
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Document Summary
Bones joined by dense fibrous connective tissue, no joint cavity, most are immovable. Sutures: rigid, interlocking joints of skull; allow for growth during youth. Syndesmoses: bones connected by ligaments, bands of fibrous tissue, fibre lengths vary. Bones united by cartilage, no joint cavity, not highly movable. Synchondroses: bar or plate of hyaline cartilage unites bones, almost synarthroses. Symphyses: fibrocartilage unites bones in symphysis joint; ex: intervertebral joints. Bones are separated by fluid-filled joint cavity, all are diarthrotic. Characteristics: bursae and tendon sheaths, stability influenced by 3 factors, allow several types of movement. Describe the six general features of synovial joints. Articular cartilage: hyaline cartilage covering ands of bone. Articular capsule: 2 layers thick (external fibrous layer and inner synovial membrane) Synovial fluid: viscous, slippery filtrate of plasma and hyaluronic acid. Cushion between fibrous layer of capsule and synovial membrane or bone. Fibrocartilage separates articular surfaces to improve fit of bone ends, stabilize joint and reduce wear and tear.
