human anatomy chapter 6

  1. What are the two types of bone formation
    • Intramembranous Ossification
    • Endochondral Ossification
  2. what is endochondral ossification?
    • type of bone formation
    • starts with a hyaline cartilage model and produces the majority of bone in the body
  3. what is intramembranous ossification?
    • type of bone formation
    • develops from mesenchyme to produce flat bones of the skull, some facial bones, the mandible, and the central portion of the clavicle
  4. what is ossification
    the formation and development of bone
  5. perforating canals
    • run parallel to and connect the central canals
    • contain blood vessels and nerves
  6. circumferential lamellae
    rings of bone just internal to the endosteum
  7. interstitial lamellae
    partial lamellae that are "left-over: portions of an osteon that is undergoing reconstruction.
  8. What are the types of bone growth?
    • Interstitial growth
    • Appositional growth
  9. what is interstitial bone growth?
    growth in the long bone
  10. what is appositional growth?
    growth in bone diameter
  11. What are the 3 major types of blood vessels in bone?
    • Nutrient arteries and veins
    • Metaphyseal arteries and veins
    • Epiphyseal arteries and veins
  12. what are the effects of exercise on the bone
    mechanical stress such as muscle contraction and gravitational forces stimulate an increase in bone density by increase in osteoblast
  13. as people age what are some changes that occur with the bones?
    • loses ability to produce organic matrix (mainly collagen)
    • loses calcium and other bone salts
  14. how long does it take for cartilage to heal after damage?
    a very long time
  15. what are the types of cartilage?
    • Fibrocartilage
    • Hyaline Cartilage
    • Elastic Cartilage
  16. Elastic Cartilage
    • made up of elastic fibers
    • able to bend and go back
  17. Fibrocartilage
    • acts as a shock absorber
    • knees and vertebrae
  18. What is Hyaline Cartilage?
    • most abundant cartilage in the body
    • weakest
    • connects the ribs to the sternum
    • very solid
    • fetal skeleton is made of hyaline cartilage
  19. Facts about cartilage
    • found throughout the body
    • semi-rigid connective tissue
    • not as strong as bone but more flexible and resilient
  20. Function of cartilage
    • Support the soft tissue- such as respiratory tree or the auricle
    • Articulations-provides smooth gliding surfaces where bone appose each other
    • Precursor model for bone growth
  21. What are chondrocytes?
  22. lacunae
  23. What are Chondroblasts?
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human anatomy chapter 6
Human Anatomy Chapter 6