Chapter 6

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Author:
chd5688
ID:
41445
Filename:
Chapter 6
Updated:
2010-10-11 19:03:25
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anatomy test
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Description:
test 2 ch 6
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  1. What happens when too many calcium ions circulate in the body fluids?
    It weakens the bones
  2. What two hormones maintain homeostasis and control storage, absorption, and excretion?
    Calcitonin and parathyroid hormones
  3. What does calcitonin and parathyroid hormones do for your body?
    Regulates calcium and phosphate levels
  4. What can aid in making your bones thicker and stronger?
    Exercise
  5. How many steps are there in endochondral ossification?
    Six
  6. Most bones originate as___________
    Hyaline cartilage
  7. What ossifies bones that originate as hyaline cartilage?
    Endocondral ossification
  8. What is the process of replacing other tissues with bone called?
    Ossification
  9. What does not contain osteons?
    Spongy bone
  10. What is the basic unit of the structure of compact bone?
    Osteon
  11. What are osteoclasts?
    Giant multinucleate cells
  12. Osteoclasts do what?
    Secrete acids and protein-digesting enzymes.
  13. Blood c3ells are within ________, and organized around the blood vessels?
    Lacunae
  14. What are the three bone markings or surface features?
    Depressions/grooves, projections, and tunnels
  15. What are a few functions of the skeletal system?
    Support, protection, storage of minerals and lipids, blood cell protection, and leverage
  16. What type of fractures occur in the vertebrae?
    Compression fractures
  17. What produces thinner and weaker bones?
    Normal aging
  18. What type of fracture causes the bone to come through the skin?
    Compound fracture
  19. What type of fracture is only in the ankle and both bones are effected?
    Pott fracture
  20. What are mature bone cells that maintain the bone matrix?
    Osteocytes

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