Canaliculus (bone)

Canaliculus (bone)

Canaliculi are microscopic canals between the various lacunae of ossified bone. The radiating processes of the osteocytes project into these canals. These cytoplasmic processes are joined together by gap junctions. Osteocytes do not entirely fill up the canaliculi. The remaining space is known as the periosteocytic space, which is filled with periosteocytic fluid. This fluid contains substances too large to be transported by the gap junctions that connect the osteocytes, including calcium and phosphate ions.

In cartilage, the lacunae and hence, the chondrocytes, are isolated from each other. Materials picked up by osteocytes adjacent to blood vessels, are distributed throughout the bone matrix via the canaliculi.

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  • Canaliculus — A canaliculus is an anatomical term used to describe a small passageway.Examples include:*Canaliculus (bone), a small channel found in ossified bone *Canaliculus (parietal cell), an adaptation found on gastric parietal cells *The lacrimal… …   Wikipedia

  • canaliculus — [kan΄ə lik′yo͞oləs] n. pl. canaliculi [kan΄ə lik′yo͞olī΄] [L, dim. of canalis, groove: see CANAL] Anat. Biol. a very small groove, or canal, as in bone …   English World dictionary

  • canaliculus — A small canal or channel. SEE ALSO: iter. [L. dim. fr. canalis, canal] anterior c. of chorda tympani a canal in the petrotympanic or glaserian fissure, near its posterior edge, through which the …   Medical dictionary

  • canaliculus cochleae — [TA] cochlear canaliculus a small canal in the petrous part of the temporal bone that interconnects the scala tympani of the internal ear with the subarachnoid space; it houses the perilymphatic duct and a small vein. Called also aqueduct of… …   Medical dictionary

  • canaliculus vestibuli — [TA] vestibular canaliculus: a small canal extending from the vestibule of the internal ear to the posterior surface of the petrous part of the temporal bone; it houses the vestibular aqueduct …   Medical dictionary

  • canaliculus — n.; pl. canaliculi a small channel or canal. Canaliculi occur, for example, in compact bone, linking lacunae containing bone cells. Bile canaliculi are minute channels within the liver that transport bile to the bile duct. Lacrimal canaliculi… …   The new mediacal dictionary

  • canaliculus — canalicular, canaliculate /kan l ik yeuh lit, yeuh layt /, canaliculated, adj. canaliculation /kan l ik yeuh lay sheuhn/, n. /kan l ik yeuh leuhs/, n., pl. canaliculi / luy /. Anat., Zool. a small canal or tubular passage, as in bone. [1555 65; …   Universalium

  • canaliculus — noun Any of many small canals or ducts in bone or in some plants …   Wiktionary

  • canaliculus — can•a•lic•u•lus [[t]ˌkæn lˈɪk yə ləs[/t]] n. pl. li [[t] ˌlaɪ[/t]] anat. zool. a small tubular passage, as in bone • Etymology: 1555–65; < L, =canāli(s) canal+ culus cule I can a•lic′u•lar, can a•lic′u•late lɪt, ˌleɪt can a•lic′u•lat ed, adj …   From formal English to slang

  • canaliculus — /kænəˈlɪkjələs/ (say kanuh likyuhluhs) noun (plural canaliculi /kænəˈlɪkjəli/ (say kanuh likyuhlee)) a small canal or tubular passage, as in bone. {Latin, diminutive of canālis channel. See canal} –canalicular, canaliculate, canaliculated,… …  

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