Bonedoctor2017.jumedicine.com/.../sites/7/2018/01/Bone-tissue-lab.pdf · What tissue type is this?...
Transcript of Bonedoctor2017.jumedicine.com/.../sites/7/2018/01/Bone-tissue-lab.pdf · What tissue type is this?...
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BonePractical part
Dr. Heba KalbounehAssistant Professor of Anatomy and Histology
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Shape of bones
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Spongy bone
Compact bone
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Decalcified bone
Ground bone
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Compact bone
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Alternating bright and dark bands indicate that collagen fibers in successive lamellae have different orientations.
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Compact bone
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VOLKMANN’S CANAL
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Cancellous( trabecular or spongy) bone
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Plate(
)
Flat bone
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Cells of Bone • Osteoprogenitor cells
• Osteoblasts
• Osteocytes
• Osteoclasts
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• Osteoblast Osteocyte
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A: OSTEOBLASTB: OSTEOCYTEC: OSTEOIDE: OLD BONE
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Osteocyte
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Osteocytes
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Osteoclast
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OsteoclastsHowship lacuna
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Periosteum: an outer fibrous above the yellow line and inner cellular below the yellow line.
Blue arrow: osteoclast. Red arrow: osteoblast Green arrow: calcified cartilage. Yellow arrow: Osteocyte
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Primary Secondary
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Identify
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A: OSTEOCLASTB: OSTEOBLAST
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Osteoclasts:
1. Are housed in Howship’s
lacunae. T/F
2. Give rise to osteoblasts. T/F
3. Are located at the site of a
bone resorption. T/F
4. Are derived from
osteoprogenitor cells. T/F
5. Are large multinucleated
cells. T/F
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➢What tissue type is this? Name the structures indicated by the letters.➢Name the ring of matrix at the pointer.➢How was this slide prepared?
A
C
B
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What does this space contain?Are Haversian Canals connected to each other? If so, by what?
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➢Identify the large black space indicated by the yellow arrow➢Identify the small black space indicated by the red arrow➢In living tissue, what would occupy this space?➢Identify the structure indicated by the yellow circle
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➢Identify the structure indicated by the pink arrow ➢Identify the structure indicated by the green arrow➢Identify the diagonal black line indicated by the blue arrow➢In living tissue, what would occupy this space
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➢What type of bone is indicated by the pink star?➢How many osteons would you expect to find in this particular type of bone?➢What type of bone is indicated by the green arrow?➢Identify the structure indicated by the black arrow➢What previously occurred here?