Ch. 6& 7 Preview Notes
U of M
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This 4 page Class Notes was uploaded by Jamesia Arnold on Monday February 8, 2016. The Class Notes belongs to BIOL 2010 at U of M taught by Mr. Parris in Fall 2016. Since its upload, it has received 52 views. For similar materials see Human Anatomy and Physiology I in Biology at U of M.
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Eugh...this class is soo hard! I'm so glad that you'll be posting notes for this class
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Date Created: 02/08/16
Chapter 6 Notes Skeletal System: Bone Tissue Similar Vocabulary Osteology: study of bone structure and treatment of bone disorders Histology: study of the structure of tissue Calcification: deposition of mineral salts in a framework formed by collagen fibers in which the tissue hardens Bone tissue is a dynamic living tissue that engages in a process called remodeling. 6 Main functions of bone tissue: 1. SUPPORT 2. Protect 3. Assistance in movement 4. Mineral homeostasis 5. Blood cell production 6. Triglyceride storage Parts of long bone: Diaphysis Epiphyses Metaphyses Articular cartilage Periosteum Medullary cavity Endosteum Bone (Osseous tissue) Contains an abundant extracellular matrix that surrounds widely separated cells. - 15% water - 30% collagen fibers - 55% crystallized mineral salts **Most abundant mineral salt is calcium phosphate** Cells in bone tissue: Osteoprogenitor cells Osteoblasts Osteoclasts Osteocytes Osteoblasts Build bone, Osteoclasts Carve out bone. 80% of skeleton is Compact Bone; 20% Spongy bone Compact bone tissue contains few spaces and strongest form It is found beneath the periosteum of all bones and makes up the bulk of the diaphysis; also provides protection and support, and resist stress produced by weight and movement. Spongy bone >> Always located in the interior of bone, protected by a covering of compact bone. It makes up most of the interior bone tissue of the short, flat, sesamoid, and irregular shaped bones. Bone formation: (4 principal situations) Formation of bone in an embryo Growth of bones until adulthood Remodeling of bone Repair of fractures Bones can grow in thickness only by appositional growth. 2 patterns of bone formation: Intramembraneous ossification Endochondral ossification Chapter 7 Notes Skeletal System: Axial Skeleton Adult human>>> 206 named bones Infants & children >>> more than 206 named bones Adult skeleton are divided into 2 divisions 1. Axial skeleton 2. Appendicular skeleton Axial skeleton- 80 bones Appendicular- 126 bones Axial: Skull 1. Cranium 2. Face 3. Hyoid bone 4. Auditory ossicles 5. Vertebral column Thorax 1. Sternum 2. Ribs Appendicular: Pectoral girdle 1. Clavicle 2. Scapula Upper limbs 1. Humerus 2. Ulna 3. Radius 4. Carpals 5. Metacarpals 6. Phalanges Pelvic girdle 1. Hip, pelvic, or coxal bone Lower limbs 1. Femur 2. Patella 3. Fibula 4. Tibia 5. Tarsals 6. Metatarsals 7. Phalanges 5 types of bone Long Short Flat Irregular Sesamoid Types of surface markings (major ): Depression & openings Processes
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