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Bone tissue

QuestionAnswer
2 structural components of connective tissue Compact bone: dense form of bone Spongy bone (cancellous) porous bone
General structure Bone matrix & Bone cells
Bone matrix Organic substances Sugar Proteins Mainly collagen Contribute to bone structure, flexibility & tensile strength (allow bone to resist stretch and twisting )
Bone matrix Inorganic substances Minerals Salts Largely calcium phosphate Give bone characteristic of hardness & resistance to compression
Osteocytes : mature bone cells that monitor & maintain the bone matrix
Osteoblasts : immature bone cells that aree responsible for making bone matrix
Osteoclasts bone resorbing cells
Bone stems cells source of new bone cells
Bone matrix group of osteons (one placed outside the next line growth rings of a tree)
Compact bone The structural unit of compact bone is called osteon (haversian system) Elongated cylinder orientated parallel to the long axis of the bone Function: tiny weight bearing pillars that give structure & support
Lumella matrix tube Running through the core of each osteon is the cneetral canal (haveersian canal) Containing blood vessels & nerve fibres that srve the osteons tissue
Canaliculi tie all the osteocytes together, allowing them to communicate & permitting nutrients & waste to be circulated
Created by: procrast
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