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Bone Histology

6.5--Histology of Bone Tissue

TermDefinition
CALCIFICATION FORMATION AND DEPOSITION OF MINERAL SALTS IN THE ECM OF BONE TISSUE ESTABLISHED BY COLLAGEN FIBERS. HARDENS BONE TISSUE
OSTEOGENIC CELLS UNSPECIALIZED STEM CELLS; FORM OSTEOBLASTS. FOUND IN PERIOSTEUM, ENDOSTEUM, AND BLOOD VESSEL CANALS
OSTEOBLASTS BONE-BUILDING; SECRETE COLLAGEN INTO ECM AND INITIATE CALCIFICATION. BECOME OSTEOCYTES AFTER SELF-TRAPPING IN SECRETIOSN
OSTEOCYTES MAINTAIN BONE TISSUE; EXCHANGE OF NUTRIENTS, WASTE, ETC.
OSTEOCLASTS IN ENDOSTEUM; RUFFLED BORDER FACES BONE SURFACE TO RELEASE LYSOSOMAL ENZYMES FOR BONE ECM BREAKDOWN
RESORPTION BREAKDOWN OF BONE ECM; NORMAL PART OF GROWTH DEVELOPMENT, AND REPAIR
OSTEON HAVERSIAN SYSTEMS. CONTAINS CENTRAL (HAVERSIAN) CANAL SURROUNDED BY CONCENTRIC LAMELLAE; RUN PARALLEL TO DIAPHYSIS AND THICKEST IN PARTS OF LEAST DIRECTION
CONCENTRIC LAMELLAE RINGS INCREASING IN DIAMETER AROUND THE CENTRAL HAVERSIAN CANAL IN BONE TISSUE FOR BLOOD FLOW
LACUNA SMALL SPACES BETWEEN LAMELLAE WHICH HOLD THE OSTEOCYTES. CANALICULI RADIATE FROM LACUNA
CANALICULI EXTENSIONS OF OSTEOCYTES ALLOWING FOR CONNECTIONS BETWEEN OSTEOCYTES AND COMMUNICATION VIA GAP JUNCTIONS
INTERSTITIAL LAMELLAE CONTAIN LACUNAE WITH OSTEOCYTES AND CANALICULI. FRAGMENTS OF OLD OSTEONS
PERFORATING CANALS RUN PERPENDICULAR TO CENTRAL CANALS; VESSELS CONNECT WITH THOSE OF CENTRAL CANALS.
CIRCUMFRENTIAL LAMELLAE ARROUND INNER AND OUTER CIRCUMFRENCE OF SHAT; DEEP OF PERIOSTEUM ARE OUTER; THOSE THAT LINE MEDULLARY CAVITY ARE INNER CIRCUMFERENTIAL
SPONGY BONE LESS DENSE; MORE SPACE. INNER CIRCLE; INNER CIRCUMFRENTIAL LAMELLAE. CONTAIN SPACES FOR RED BONE MARROW AND AREA FOR BONE GROWTH VIA OSTEOBLAST LINING ON LAMELLAE
TRABECULAE PATTERN OF SPONGY BONE TISSUE IN THIN COLUMNS
INTRAMEMBRANOUS OSSIFICATION STEM CELLS-->BONE
ENDOCHONDRAL OSSIFICATION STEM CELLS-->CARTILAGE-->BONE
Created by: 100000434525601