Lab3-cart_bone lec - Supportive Connective Tissues Supportive Connective Tissues • Bone or osseous tissue – Strong calcified calcium salt

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Supportive Connective Tissues Types of Cartilage Hyaline cartilage Stiff, flexible support Reduces friction between bones Found in synovial joints, rib tips, sternum, and trachea Elastic cartilage Supportive but bends easily Found in external ear and epiglottis Fibrous cartilage (fibrocartilage) Limits movement Prevents bone-to-bone contact Pads knee joints Found between pubic bones and intervertebral discs
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Hyaline Cartilage Rubbery matrix; dispersed collagen fibers; clustered chondrocytes in lacunae supports airway, eases joint movements Ends of bones at movable joints; sternal ends of ribs; supportive material in larynx, trachea, bronchi and fetal skeleton
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Supportive Connective Tissues
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Elastic Cartilage Hyaline cartilage with elastic fibers Provides flexible, elastic support external ear and epiglottis
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Supportive Connective Tissues
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Fibrocartilage Hyaline cartilage with extensive collagen fibers (never has perichondrium) Resists compression and absorbs shock pubic symphysis, meniscus and intervertebral discs
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Unformatted text preview: Supportive Connective Tissues Supportive Connective Tissues • Bone or osseous tissue – Strong ( calcified : calcium salt deposits) Resists shattering (flexible collagen fibers) Bone cells or osteocytes Arranged around central canals within matrix Small channels through matrix ( canaliculi ) access blood supply Periosteum Covers bone surfaces Fibrous layer Cellular layer Bone • Spongy bone- spongy in appearance – delicate struts of bone covered by compact bone found in heads of long bones Compact bone- solid in appearance more complex arrangement cells and matrix surround vertically oriented blood vessels in long bones Bone Tissue (compact bone) • Calcified matrix in lamellae around central canal Osteocytes in lacunae between lamellae Skeletal support; leverage for muscles; mineral storage...
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This note was uploaded on 12/02/2009 for the course IB 131L taught by Professor Lewis during the Spring '09 term at University of California, Berkeley.

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Lab3-cart_bone lec - Supportive Connective Tissues Supportive Connective Tissues • Bone or osseous tissue – Strong calcified calcium salt

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