Bone and Skeletal Tissues

Bone and Skeletal Tissues - new matrix at external face of...

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Bone and Skeletal Tissues Skeletal Cartilages: cartilage tissue. .. mostly water; no blood vessels or nerves - surrounded by a layer of dense irregular connective tissue - the perichondrium, which contains blood vessels - contains chondrocytes in lacunae, ground substance & fibers - 3 types: hyaline , elastic & fibrocartilage Hyaline Cartilages: frosted glass appearance - fine collagen fiber matrix - most abundant type - present in: articular (movable joint) cartilages , costal cartilages (connect ribs to sternum), respiratory cartilages nasal cartilages Elastic Cartilages: similar to hyaline cartilage, more elastic fibers (very flexible) Fibrocartilage: rows of chondrocytes with thick collagen fibers; highly compressible with great tensile strength Growth of Cartilage: - appositional growth (growth from outside): chondroblasts in perichondrium secrete
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Unformatted text preview: new matrix at external face of existing cartilage- interstitial growth (growth from inside): chondrocytes within matrix divide & secrete new matrix- growth of cartilage generally ends during adolescence- cartilage may become calcified Classification of Bone: Human Skeleton: 206 named bones- Axial skeleton: 80 bones. .. bones of skull, vertebral column & rib cage- Appendicular skeleton: 126 bones. .. bones of upper & lower limbs, pectoral & pelvic girdles- Long bones: longer than they are wide; shaft & 2 ends (e.g.: bones of arms & legs, except wrist, ankle & patella)- Short bones: roughly cube-shaped (e.g.: ankle & wrist bones)- Sesamoid bones: short bones within tendons (e.g.: patella)- Flat bones: thin, flat & often curved (e.g.,: sternum, scapulae, ribs & most skull bones)- Irregular bones: odd shapes; don't fit into other classes (e.g.: hip bones & vertebrae) Functions of bones:- Support- Protection...
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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Bone and Skeletal Tissues - new matrix at external face of...

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