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JOINTS

JOINTS. FIBROUS JOINTS Lie between bones that closely contact one another. Thin layer of dense connective tissue joints the bones. Suture (skull) Joint in leg between tibia and fibula (distal end). CARTILAGINOUS JOINTS Hyaline cartilage connect bones. Joints of vertebral column

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JOINTS

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  1. JOINTS FIBROUS JOINTS • Lie between bones that closely contact one another. • Thin layer of dense connective tissue joints the bones. • Suture (skull) • Joint in leg between tibia and fibula (distal end)

  2. CARTILAGINOUS JOINTS • Hyaline cartilage connect bones. • Joints of vertebral column • Intervertebral disc: fibrocartilage surrounding a pulpy or gelatinous core. • Absorbs shocks and helps equalize pressure between adjacent vertebrae when the body moves.

  3. SYNOVIAL JOINTS • Most joints are these type. • Allow free movement. • Complex structurally than fibrous or cartilaginous • Articular ends covered with hyaline cartilage. (articular cartilage) surrounded by a tubular capsule of dense connective tissue.

  4. Joint capsule: composed of an outer layer of ligaments and an outer layer of ligaments and an inner lining of synovial membrane (secretes synovial fluid). • Synovial fluid: lubricates joints. • Menisci: flattened pads of fibrocartilage, shock-absorber. Between the articulating surfaces of the bones.

  5. bursae: fluid-filled sacs. • Located between tendons and underlying bony prominences. • Aid movement of tendons that glide over these bony parts or other tendons.

  6. BALL-AND-SOCKET JOINT • Bone with a ball-shaped head that articulates with the cup-shaped cavity of another bone. • Wider range of motion • Movements in all planes. Ex. Shoulder and hip

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