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14 Cards in this Set
- Front
- Back
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What is bone? |
Mineralised organic matrix and an active form of solid connective tissue consisting of living cells. |
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What are joints? |
Joints are articulation where two bones meet. |
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What is cartilage? |
Dense tissue consisting of collagen fibres. |
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What are ligaments? |
Fibre bundles that hold bones together in synovial joints |
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What are tendons? |
Bundles of tough collagen fibre band that hold bone and muscle together |
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What are muscles? |
Muscular tissue that consist of muscle fibres |
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What are bone forming cells called? |
Osteoblasts - derived from mesenchymal precursor cells. |
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What do osteoblasts do? |
Deposition of inorganic salts and osteoid in bone tissue. They differentiate into osteocytes. |
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What do Osteocytes do? |
Mature bone cells that are responsible for new bone mineralisation & monitor/maintain bone tissue. |
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What are bone resorbing cells called? |
Osteoclasts - derived from hematopoietic precursors. They break down bone, releasing calcium and phosphate. |
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State the main features of Spongy (trabecular) bone |
Looks like honeycomb Light/less dense, porosity between 50-90% Highly VASCULAR - contains red bone marrow Contains few lamellae & osteocytes Found in the end of long bones |
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State the main features of Compact (cortical) bone |
Accounts for 80% of body bone mass Made up of parallel cylinders = OSTEONS Dense tissue, porosity of 5-10% Very strong Found in the cortex/outer surface of bones
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What are the functions of Compact (cortical) bones? |
Protect organs Support the body Provide levels of movement Store & release chemical elements eg. Ca |
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Name the 5 different shapes of bone
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