ANP 1106 Lecture Notes - Lecture 7: Pubic Symphysis, Synovial Joint, Hyaline Cartilage
9 Feb 2018
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Document Summary
A joint is a site where 2 or more bones meet. & by function (how much freedom of movement is allowed at that joint??) Bones joined by fibrous ct: no joint cavity so very little to no movement at joint. Seams only found between bones of skull. Overlapping or interlocking of 2 bones; junction filled with very short ct fibers. Cord (ligament) or sheet (interosseous membrane) of fibrous ct. Peg-in-socket; only example = tooth in bony socket. Bones are united by cartilage (no joint cavity) Areas of growth: eg: epiphyseal plates, between each of 1st 7 ribs and sternum. Articular surface covered with hyaline cartilage - linked plate of fibrocartilage. Strength with flexibility: eg: pubic symphysis, intervertebral joints. Synovial joints - most joints (lots of movement) Covers opposing bone surfaces cushioning bone so it isn"t crushed: joint cavity = synovial cavity; fluid filled, articular capsule - doubled layered, synovial fluid. Fills joint cavity; reduces friction: reinforcing ligaments.
