Osteology

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Author:
lisamarie0418
ID:
245981
Filename:
Osteology
Updated:
2013-11-09 16:37:25
Tags:
Bones
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Description:
Osteology-bones
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  1. Cartilage
    Unlike other connective tissues it lacks nerves and blood vessels. This results in decreased tissue healing.
  2. Chondrocytes
    Cartilage Cells
  3. Proteoglycans
    bind to water to make cartilage rubbery.  (trap water with in cartilage)
  4. Fibers (proteins)
    • Collagen
    • Elastic
  5. Ground (interfibrillar) substance
    Watery substance between the fibers
  6. Three types of Cartilage
    • Hyaline Cartilage
    • Fibrocartilage
    • Elastic Cartilage
  7. Hyaline Cartilage
    • Smooth, strong, rigid (hard), glass like
    • most common cartilage in the body
    • reduces friction (in between the bones)
    • This makes up the cartilage at movable joints
  8. Fibrocartilage
    • Acts as a shock absorber
    • has strength to resist compression and tension
  9. Elastic Cartilage
    • Flexible
    • found in the eternal ear and epiglottis
  10. Osteology
    • Os=Bone
    • Study of bone
  11. Physical Properties of Bone Tissue
    • Strength to resist tension
    • Forces that pull
    • Collagen
    • Strength to resist compression
    • Forces that push
    • Ability to remodel or change
    • Bone "construction worker" cells
  12. Strength to resist tension
    forces that pull
  13. Strength to resist compression
    forces that push
  14. Ability to remodel or change
    Bone 'Construction worker' cells
  15. Osteoblast
    • Builders
    • bone forming or depositing cells
  16. Osteocyte
    • supervisors
    • bone regulating or monitoring cell
  17. Osteoclast
    • cutters
    • cell responsible for breaking down or resorbing bone
  18. Extracellular Matrix
    Organic Components
    • Fibers
    • Collagen-gives bone its tensile strength
    • proteins
  19. Inorganic Components
    • Interfibrillar (ground) substance
    • Hydroxyapatite-the hard stuff of bone
    • bone salts
  20. 2 basic components
    • Fibers
    • interfibrillar
  21. fibers
    • organiccomponents
    • proteins
  22. Interfibrillar Substance
    • inorganic components
    • Bone salts
  23. Hydroxyapatite
    • Gives bone its compressive strength
    • between fibers
  24. compact bone
    • microscopically porous
    • external layer
    • dense and vascular
  25. osteon
    structural unit of compact bone
  26. Spongy or trabecular bone
    • macrosopically porous
    • internal layer
    • vascular and spongy
    • filled with bone marrow
  27. trabeculae
    • "little beams"
    • structural units of spongy bones
  28. Bone as an organ
    206 individual bones come in a variety of size and shapes
  29. Classification of bones
    • long
    • short
    • flat
    • irregular
  30. Long
    greatest length in one dimension
  31. short
    cube like bones
  32. flat
    platelike bones
  33. irregular
    complex shapes that do not fit in any of the above categories
  34. Periosteum
    • wrap around the outside bone
    • double layered membrane of dense irregular CT
    • really strong in all directions
  35. Articular cartilage
    • at the ends of bone
    • made of hyaline cartilage
    • lacks nerves and blood vessels
    • reduces friction between bone ends
  36. Diaphysis versus epiphysis
    • tubal shaft
    • flared ends are the epiphysis
  37. Medullary cavity
    • hollow center with in bone of the diaphysis
    • filled with bone marrow
    • yellow bone marrow for adult
    • red bone marrow for child
  38. Nutrient Foramen
    • passage way for blood vessels into the medullary cavity
    • into and out of the bone
  39. 2 most external coverings of a long bone
    articular cartilage and periosteum
  40. Functions of Bone Tissue and Bones
    • Support
    • Movement
    • Protection
    • Calcium (ca2+) homeostasis
    • blood-cell formation
    • energy storage
  41. Blood cell formation
    red bone marrow
  42. energy storage
    yellow bone marrow

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