Health

Skeletal SystemWhat argon the five primary functions of the skeletal systemThere ar 206 swot up in the human body , dual-lane into quartet categories Long tusks (eg , femur , short fig ups (eg , metacarpals , hackneyed attires (eg sternum , and irregular bone up (eg , vertebrae . The shape and edifice of a specific bone argon determined by its function and the forces exerted on it . swot up atomic scrap 18 constructed of cellular (trabecular or cortical ( crush ) bone thread . Long bones be shaped deal rods or shafts with rounded ends . The shaft , cognise as the diapysis , is in general cortical bone . The ends of the long bones , called epiphyses , are primarily cancellate bone . The epiphyseal home base separates the epiphyses from the ray of light and is the center for longitudinal growth in children . In the raise , it is calcified . The ends of long bones are covered at the joints by articular cartilage , which is tough , elastic avascular tissue . Long bones are designed for weight social unit bearing and movement . Short bones consist of cancellous bone covered by a layer of gate-crash bone (Hoyle , 2000 . Flat bones are importance sites for hematopoiesis and frequently provide vital organ protection . They are made of cancellous bone layered between load down bones . Irregular bones have unique shapes unify to their functions .

Generally , irregular bone structure is similar to that of verbatim bonesBon e is composed of cells , protein intercellul! ar substance , and mineral deposits . The cells are of common chord basic types - osteoblasts , osteocytes , and osteoclasts . Osteoblasts function in bone formation by secreting bone matrix . The matrix , which consists of collagen and ground substances provides a fashion model in which inorganic mineral salts are deposited Osteocytes are mature bone cells involved in bone-maintenance functions they are located in lacunae (small matrix units . Osteoclasts , located in shallow Howship s lacunae (small pits in bones , are multinuclear cells involved in destroying , resorbing , and remolding bone (Mays 2003ReferenceHoyle , Graham (2000 . comparative degree Physiology of the nauseous Control of Muscular Contraction . CambridgeMays , Simon (2003 . The Archaeology of sympathetic Bones . - Routledge . London . PAGEPAGE 1...If you want to get a secure essay, parade it on our website: OrderCustomPaper.com

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