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12 year old boy with broken arm in upper and lower area of arm. Who is…

- - - - Which reduces friction
      - Adsorbs shock in movable joints
  - - - Younger boy is easier to heal
- - - - Blood clotting
      - Nerve impulse transmission
      - Muscle contraction
    - - ATP utilization
      - Plasma membrane
    - - Released from bone into blood as needed
  - - - More flexible than bone
      - 3 types
        
        Hyaline
        
        Most prevalent
        
        Attaches ribs to sternum
        
        Cartilage within growth plates
        
        Provides model for formation of most bones in body
        
        Covers ends of some bones, if at joint it is often called articular because it articulates bone to bone
        
        Elastic
        
        External ear and epiglottis
        
        Fibrocartilage
        
        Weight bearing cartilage that withstands compression
        
        Location
        
        Intervertebral disk
        
        Pubic symphysis
        
        Cartilage pads of knees
      - Semi-rigid connective tissue
    - - Rigid connective tissue
- - - - Contains red bone marrow in children
      - Contains yellow bone marrow in adults
      - Hollow, cylindrical space within the diaphysis
    - - Distal epiphysis
        
        End farthest to trunk
        
        Made of
        
        Outer thin layer of compact bone
        
        Inner region of spongy bone
      - Proximal epiphysis
        
        End of bone closets to trunk
      - Knobby region at each end of bones
      - Articular cartilage which covers joint surface
      - Thin layer of hyaline cartilage
        
        Reduces friction
        
        Absorbs shock in movable joints
    - - Provides leverage and weight support
      - Compact bone with thin spicules of spongy bone extending inward
      - Enlongated, usually cylindrical shaft, runs from proximal to distal end of bone
    - - Thin layer of hyaline cartilage
      - ONLY in adults the ephiphyseal line is remnant of the epiphyseal plate
      - Contains epiphysis plate/disk (known as growth plate)
      - Region of bone between diaphysis and epiphysis
- - - - Later with time it will e remolded and go completely away
- - - - Vitamin D is the action of sunlight on the skin that triggers ody to produce vitamin
      - Calcium can be found in dairy, green leafy veggies, broccoli, and intact with salmon
        
        Calcium is most abundant mineral found in bone
        
        Regulates nerve impulses conduction
        
        Needed for initiation of smooth, skeletal, and cardiac muscle contraction
        
        Blood clotting
        
        Stimulation of heart rate and strength of contraction
  - - - Stimulates osteoclast proliferation
        
        Which breaks done bone and calcium releases into blood stream
      - Promotes calcium to be absorbed in kidney tubules (so it wont be lost in urine)
      - Release stimulated y low blood calcium