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College of Life Sciences Cell Biology and Physiology
CELL 325: Tissue Biology
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Bone formation, Bone, and Developing Tooth

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Endochondral 4X.jpg
Endochondral 4X
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Endochondral 20X.jpg
Endochondral 20X
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Endochondral 40X 1.jpg
Endochondral 40X 1
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Endochondral 40X 2.jpg
Endochondral 40X 2
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Bone 10X.jpg
Bone 10X
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Bone 10X Long.jpg
Bone 10X Long
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Bone 20X.jpg
Bone 20X
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Bone 40X Long.jpg
Bone 40X Long
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Tooth 4X.jpg
Tooth 4X
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Tooth 10X
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Tooth 40X.jpg
Tooth 40X
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Endochondral Bone Formation

  • A: Hyaline Cartilage

    B: Bone

    C: Perichondrium lines the outside of the cartilage portion and is named DCCTRA histologically

    D: Periosteum surrounds the portion that is bone and is also named DCCTRA.
  • A: Zone of reserve cartilage is typical hyaline cartilage with chondrocytes surrounded by matrix

    B: Zone of proliferation has clusters of cells that are dividing and increasing in size

    C: Zone of maturation occurs when the cells stop dividing and start to increase in size

    D: Zone of hypertrophy is when the chondrocytes become greatly enlarged and stack in columns

    E: Zone of calcification occurs as the cells become calcified

    F: Zone of degeneration and the osteogenic zone are characterized by degeration of chodrocytes and differentiation of osteogenic cells in to osteoblasts (Wheaters)
  • A: Zone of reserve

    B: Zone of proliferation
  • A: Zone of maturation; where the cells are starting to enlargen

    B: Zone of hypertrophy; where the cells are very large and vacuous

    C: Zone of calcification. The cartilage matrix ends and bone begins

    D: Zone of degenration and osteogenic layer

Bone

  • A: Osteon is the functional unit of bone and is arranged in a circle with a central or haversian canal at the center

    B: Haversian canal
  • A: Haversian canals at the center of the osteons

    B: Concentric lamellae surrounds the haversian canal in the osteon.

    C: Interstitial lamellae is located between the osteons and is arranged in a more linear fashion

    D: Osteocytes are located inside small openings or lakes called lacunae
  • A: Haversian canal

    B: Bone canaliculi allow for communication between cells

    C: Osteocytes in lacunae

Developing Tooth

  • A: Dental pulp of the forming tooth

    B: Bone of the mandible

    C: Stratified squamous epithelium of the mouth
  • A: Dental pulp

    B: Odontoblasts are simple columnar epithelial cells that produce dentine

    C: Pre-dentin

    D: Dentin

    E: Enamel that has been secreted by the ameloblasts. Enamel is the hardest substance in the body

    F: Ameloblasts are simple columnar epithelial cells that secrete enamel

    G: Stratified squamous epithelium of the mouth
  • A: Odontoblasts

    B: Pre-dentin

    C: Dentin

    D: Enamel

    E: Ameloblasts

Connective Tissue

Areolar and Loose Connective Tissue
Hyaline, Elastic, and Fibro Cartilage
Hepatic and Splenic Capsule
Reticular Fibers, Tendon, Elastic Lamina, and Adipose Tissue
Bone formation, Bone, and Developing Tooth
Connective Tissue Practice Quiz