AH Bone
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is bone? | show 🗑
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| show | To support and protect our bodies, and due to its mineral content, it also is a storage site for calcium and phosphate. Both can be mobilized from the bone matrix and taken up by the blood as needed to maintain appropriate levels throughout the body.
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| What is the structure of bone matrix? | show 🗑
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| What other cells are present in bone? | show 🗑
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| What are the two classifications of bone tissue? | show 🗑
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| show | Long Bones Short Bones Flat Bones Irregular Bone
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| show | Bones are covered by periosteum, a sheath of dense fibrous connective tissue containing osteoprogenitor cells.
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| show | Bone cavities are lined by endosteum, a layer of connective tissue cells that contains osteoprogenitor cells. These endosteal cells are flattened and resemble fibroblasts. They differentiate into osteoblasts in response to appropriate stimuli.
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| show | The marrow cavity and the spaces in spongy bone contain bone marrow. Red marrow has developing blood cells, yellow marrow is no longer developing and is full of fat.
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| What is the structure of mature lamellar/compact bone? | show 🗑
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| What is the interstitial bone? | show 🗑
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| What is the structure of mature spongy/cancellous bone? | show 🗑
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| show | 1. Nonlamellar/bundle/woven. 2. More cells per unit area than mature bone. 3. Randomly arranged cells 4. More ground substance in its matrix.
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| What are the two types of bone formation? | show 🗑
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| How does intramembranous ossification occur? | show 🗑
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| show | Hyalin Cartilage model Cuff of bone around it Periosteal bony collar Chondrocytes in midregion of cartilage model become hypertrophic. Calcified matrix causes death of chondrocytes. Periosteal cells migrate into the cavity.
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| What is seen during endochondral bone grow? | show 🗑
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Created by:
mattdomin