KIN 325-Unit 2 Study Objectives
KIN 325-Unit 2 Study Objectives

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Simon Fraser University
Biomedical Physio & Kines
BPK 325
Josephine Anthony

KIN 325Unit 2The Skeletal SystemObjectives1Discuss the functions of the skeletal systemthe skeletal system is fundamental to the maintenance of an erect positionprovides protection for the soft tissues of the body such as the brain within the craniumprovides support ex suspension of the upper limb by the shoulder girdleimportant in movement provides muscle attachments articular surfaces and a welldeveloped lever system since bones are not solid they can provide all of the above functions with a minimal load on the musclesinner core of a bone is filled with marrow red marrow is responsible for formation of blood cellsthe inorganic component of bone provides a changeable or labile storage area for calcium and phosphatean imbalance of calcium andor phosphate metabolism in the body is manifest as an increased deposition of inorganic salts on existing bone or as an increased reabsorption of bone2Describe the general structure of a typical long bone and list the functions of each of its partsperiosteum covers most of the surface of each bone covers all surfaces of the bone except where it takes part in a joint or articulation2 layers thick a dense outer fibrous layer and an inner looser network adjacent to the bone itselfperiosteum fibers connect with fibers of tendons ligaments and muscles as well as underlying boneosteogenic or osteoblastic cells in the periosteum produce new boneblood vessels and nerves travel within the periosteumhyaline cartilage provides a smooth lubricating surface on parts of the bone that participates in a joint acts as a shock absorber prevents wear and tear of the bonecompact boneimmediately deep of the periosteum extremely dense and resembles teeththickest in the shaft diaphysis of the bonethinnest in the ends epiphyses of the bonearranged in a very wellstructured histological pattern consisting of osteons or Haversian systems based on repeating units of longitudinally directed blood vells contained in Haversian canalsdiaphysis and epiphysesdiaphysis tubular shaft forms the long axis of a long boneepiphyses bone ends covered
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