A&P6

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Author:
TheseFights
ID:
224107
Filename:
A&P6
Updated:
2013-06-16 21:06:54
Tags:
anatomy phisology
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Description:
Ch. 6
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  1. The carpal bones are examples of ________ bones.
    short
  2. The humerus is an example of a ________ bone.
    long
  3. The region of a long bone between the end and the shaft is known as the ________.
    metaphysis
  4. Through the action of osteoclasts,
    bony matrix is dissolved
  5. The ________ interactions allow bone to be strong, somewhat flexible, and highly resistant to shattering.
    protein-crystal
  6. The narrow passageways that contain cytoplasmic extensions of osteocytes are called
    canaliculi
  7. The central canal of an osteon contains
    blood vessels
  8. What is a characteristic of bone?
    The bone matrix is very dense and contains deposits of calcium salts
  9. ________ bone reduces the weight of the skeleton and reduces the load on muscles.
    Spongy
  10. The deposition of calcium salts in bone tissues is referred to as
    ossification
  11. Intramembranous ossification begins with differentiation of ________ cells.
    mesenchymal
  12. Bone tissue formation begins when osteoblasts secrete
    collagen fibers
  13. In normal adult bones, a portion of the _____ and _____ content is replaced each year.
    protein, mineral
  14. When stress is applied to a bone, the minerals in the bone produce
    a weak electrical field that attracts osteoblasts
  15. Where in the body does the production of precursors for the synthesis of calcitriol occur?
    skin
  16. Elevated levels of calcium ion in the blood stimulate the secretion of the hormone
    calcitonin
  17. Parathyroid hormone inhibits
    inhibits calcitonin secretion
  18. Bone plays a central role in the regulation of blood levels of
    calcium
  19. Hundreds of years ago explorers often died of scurvy. How can this bone-related disease be prevented?
    Supplement the diet with fresh fruit rich in vitamin C
  20. The disease osteomalacia causes calcium loss from the skeleton, which would result in bones that are
    weaker and more flexible
  21. While on a school skiing trip in Colorado, Heidi falls and breaks her tibia and fibula in a Pott fracture. What would you expect as a prominent part of her clinical assessment several hours after the fall?
    hematoma
  22. A condition in which bone becomes riddled with holes is called
    osteoporosis
  23. If osteoclasts are more active than osteoblasts, bones will become
    osteopenic
  24. Aging has what effect on the skeletal system?
    loss of calcium and collagen fibers from matrix

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