Histology of Bone - BM5 NLM1

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1. True or flase: Bone remodelling is the reorganisation of bone structure by a balanced process of resorption and deposition of ECM?

  • Bonjour
  • True
  • Pass
  • False
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2. What are Osteoclasts?

  • Large, immotile, multinucleated cells of ECM origin
  • Large, motile, multinucleated cells of bone marrow origin
  • Small, motile, multinucleated cells of ECM origin
  • Large, motile, single nucleated cells of ECM origin

3. What two substance make up the extra-cellular bone matrix, and in what approximate ratio?

  • Collagen Type II (30%), Hydroxyapatite Crystals (70%)
  • Osteoid (30%), Inorganic Minerals (70%)
  • Osteoid (70%), Inorganic Minerals (30%)
  • Collagen Type II (70%), Hydroxyapatite Crystals (30%)

4. Which of the following stimulates activity of Osteoclasts?

  • Calmodulin
  • Thyroid hormone
  • Parathyroid hormone
  • Calcitonin

5. In broad terms, bone tissue consists of four elements. Whatare they?

  • Endosteum, Hyposteum, Osteocytes, Osteoclasts
  • Periosteum, Endosteum, Bone matrix, Bone cells
  • Periosteum, Epiosteum, Endosteum, ECM
  • Epiosteum, Endosteum, Osteocytes, Osteoclasts
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