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BIOC33H3 (127)
Lecture

Musculoskeletal System

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Department
Biological Sciences
Course
BIOC33H3
Professor
Stephen Reid
Semester
Fall

Description
Chapter 62Musculoskeletal SystemSTRUCTURES AND FUNCTIONSThe main functions of bone are support protection of internal organs voluntary movement blood cell production and mineral storage Cylindershaped structural units haversian systems fit closely together in compact bone creating a dense bone structure Types of bone cells include osteoblasts osteocytes and osteoclasts o Osteoblasts synthesize organic bone matrix collagen and are the basic boneforming cells o Osteocytes are the mature bone cells o Osteoclasts participate in bone remodeling by assisting in the breakdown of bone tissue o Bone remodeling is removal of old bone by osteoclasts resorption and the deposition of new bone by osteoblasts ossification Each long bone consists of the epiphysis diaphysis and metaphysis o Epiphysis the widened area found at end of a long bone is composed of cancellous bone Epiphysis is the location of muscle attachment
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