PLN 103 Lecture Notes - Lecture 8: Hyaline Cartilage, Joint Capsule, Synovial Joint
13 Dec 2016
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Document Summary
Provide strength, support, and protection for softer tissues. Movement can only occur at joints (articulations where 2 bones connect, and how bones interact when they interconnect) Characteristics determines type and amount of movement. Structural relies on anatomical organization of joint. Functional determines direction and distance of movement (rom) Synarthrosis (immovable) very strong; edges of bones may touch or interlock. E. g. epiphyseal cartilage of long bones (b/w ribs and sternum) E. g. metopic suture of skull, epiphyseal lines of long bones. More movable than synarthrosis but stronger than diarthrosis. E. g. connection b/w pubic and fibula bones. At the ends of long bones, within articular capsules, lined with synovial membrane. Permit a wider range of motion than other types. Pad articulating surfaces within articular capsules prevent bones from touching. Smooth surfaces lubricated by synovial fluid reduce friction. Sprain stretched ligaments cause tears in collagen fibres.
