VCU HPEX 250 - Module 14 (6 pages)

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Module 14



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Module 14

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Pages:
6
School:
Virginia Commonwealth University
Course:
Hpex 250 - Medical Terminology
Medical Terminology Documents

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Module 14 Musculoskeletal System Section 1 Anatomy and Physiology Lesson 1 Bone Function o Composition and Functions of the Musculoskeletal System Composed of mainly muscles and bones Supportive structures o Tendons o Cartilage o Bursae Joints o Connect bones and muscles o Enable complex movements Functions Provide framework protection and support for the body s internal organs Enables movement internal and external Provides its own storage areas for minerals needed for o Bone growth o Development o Repair Red bone marrow within bones aid in the formation of blood o Osseous Tissue and Osteocytes Osseous bony Bony tissue is suffused with a rich supply of blood vessels and nerves Osteocytes Bone cells make up the osseous tissue along with dense connective tissue collagen and intercellular calcium salts Oste o bone Cyte Cell o Bone Formation Cartilage chondr o Bones of an embryo begin as this Osseous tissue without intercellular calcium salts Ossification o During fetal development calcium salts are deposited within the cartilage o Bone Growth Epiphyseal Line Area of cartilage tissue that is being replaced by new bony tissue as the bone grows Named because it marks the area of growth along the epiphysis o Bony end of a long bone o AKA Epiphyseal Plate or Growth Plate As cartilage cells at the edges of this plate form a new bone the bone lengthens When bone achieves full length epiphyseal plate calcifies o Kinds of Osteocytes Osteoblasts Smaller immature osteocytes Form bony tissue that replaces the cartilage blast embryonic or immature Osteoclasts AKA Bone Phagocytes Larger bone cells Reabsorb or digest bony tissue and bone minerals inside each bone o Enlarging inner cavity o Process prevents the bone from becoming too thick and heavy clast break Lesson 2 Bone Composition and Structure o Bone Types Long Bones Found in legs and arms Each end is called an epiphysis Proximal Epiphysis o Closes to the midline of the body Distal Epiphysis o Farther end Diaphysis o Middle



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