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12 Cards in this Set
- Front
- Back
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What two supporting structures can be used in ossification?
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Fibrous connective tissue (formed by mesenchyme) and hyaline cartilage.
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When does ossification occur in the human embryo?
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6-7 weeks.
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In intermembranous ossification, what kind of tissue changes into bone?
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Loose connective tissue membrane.
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In endochondrial ossification, what kind of tissue changes into bone?
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Cartilage.
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What three bones are formed by intramembranous ossification?
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Skull, mandible, and clavicle.
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What is the organic matrix secreted by the osteoblasts called?
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Osteoid.
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What kind of texture does osteoid have?
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Soft and collagenous.
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What do osteocytes do to the osteoid?
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Add calcium and other minerals transforming it into a hard calcified matrix (bone).
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What do osteocytes in the periosteum produce OUTSIDE the spongy bone?
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Compact bone.
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In intramembranous ossification, what do mesenchymal cells differentiate into?
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Osteoblasts.
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In intramembranous ossification, what does the vascularized connective tissue in the trabecular spaces become?
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Red marrow.
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In endochondrial ossification, what gets replaced by bone?
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Cartilage.
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