Bone, muscle. Lecture 1

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Note by jesse.bryant.711, updated more than 1 year ago
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100 Recn104 (bones and muscles) Note on Bone, muscle. Lecture 1, created by jesse.bryant.711 on 05/20/2013.

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Page 1

Bones and muscles 1

5 functions:supportblood cell productiontransport of minerals and lipidsleverage protection

2 skeletons:Axial - skull sternumappendicular - shoulder 

long bonesshort bonesflat bonessutaral bones- skullirregular bonessesamoid bones

^^^ Look up definitions of

Bone histology 4 main partsHard matrixbone cellscanaliculiperostium-membrane covering outer surface

epitheseal growth. top of the bone grows outlengthand change in diameter.

Bone cellsOsteocytes: in mature bone. repair and regenerates calciumOsteoblasts: Production of boneOsteoclasts:Resorption of bone during growth

compact bone:harvesin systemLamelle;rings around central  canallacunae: spaces between bone containing osteocytescanalicuni: network of canals between lacunae allowing transport of nutrients and waste

Spongey bones:trabeculae: odd platesLucanae Lies here

osteons in diaphysis

osteons in part of bone where not stressed

bone markings:elevations where ligaments and tendons attatch to bone

more stress on bone makes stronger. body weight maintainsand less than body weight bones brittle

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