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Anisa Abdi -Skeletal System/Tissues, Joints and skeletal Muscle (Skeletal…

- - - - Dense bone, matrix is solidly filled with organic ground substance and inorganic salts,with lacunae that contain osteocytes.
  - - - Where most red blood cells, platelets, and white blood cells are formed.
    - - produces fat, cartilage, and bone.
  - - - Made of spongy, bone tissue filled with red bone marrow. Important for producing blood cells. Found in ends of long bones & in the pelvis, ribs, vertebrae, and skull.
  - - - Epyphysis.
      - Diaphysis
      - Metaphysis
      - Medullary Cavity.
- - - - Surrounds groups of muscle fibers called fascicles.
    - - Outermost layer. Surrounds the entire muscle.
    - - Deepest layer. Separates individual muscle fibers.
  - - - Sarcolemma
      - Sarcoplasm
      - Mitochondria
      - Myofibrils
      - Sarcomere
      - Sarcoplasmic Reticulum
      - Transverse Tubules
      - M Line
      - A/I band
      - Thin and Thick Filament
- - - - Symphasis - made of hyaline cartilage and fibrocartilage, slightly moveable.
      - Synchondrosis -made of hyaline cartilage, immoveable.
      - consisting mainly of collagen.
  - - - Suture - (skull only) No movement.
      - Syndesmoses - bundles of dense regular connective tissue , little movement.
      - Gomphosis - where tooth meets alveolus periodontal ligament, immovable.
  - - - Joint Capsule
        
        Outer layer - composed of dense regular connective tissue.
        
        Inner Layer - composed of areolar connective tissue
      - Articular Cartilage
      - Joint Cavity
        
        Filled with synovial Fluid, slippery and lubricating.
      - Bursae
        
        Fibrous sack filled with synovial fluid.
  - - - A moveable joint that allows only rotary movement around a single axis.
    - - Formed between two or more bones where the bones can only move along one axis to flex or extend.
    - - Provide stability to the bones while providing more flexibility than a hinge or gliding joint.
    - - Permits movement in two planes, allowing flexion, extension, adduction, abduction, and circumduction.
    - - Enjoy the highest freedom of motion in the body thanks to their ball like structure.
    - - Under physiological conditions, allows only gliding movement.