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Diagram of a typical long bone showing both cortical (compact) and cancellous (spongy) bone. Haversian canals [i] (sometimes canals of Havers, osteonic canals or central canals) are a series of microscopic tubes in the outermost region of bone called cortical bone. They allow blood vessels and nerves to travel through them to supply the osteocytes.
Each osteon consists of concentric layers, or lamellae, of compact bone tissue that surround a central canal, the Haversian canal. The Haversian canal contains the bone's blood supplies. The boundary of an osteon is the cement line. Each Haversian canal is surrounded by varying number (5-20) of concentrically arranged lamellae of bone matrix.
Volkmann's canals, also known as perforating holes or channels, are anatomic arrangements in cortical bones that allow blood vessels to enter the bones from periosteum. They interconnect the Haversian canals (running inside osteons ) with each other and the periosteum.
Ohio and Erie Canal: OH: 1827 1913 308 mi (496 km) Patowmack Canal (Potomac Canal) MD: 1795 1828 Consists of the Little Falls Canal, Great Falls Canal, Seneca Falls Canal, Payne's Falls Canal, and House Falls Canal VA: Pawtucket Canal: MA: 1796 Pennsylvania Canal: PA: Pennsylvania and Ohio Canal: PA: 1840 1877 82 mi (132 km) OH: Portage Canal ...
In bovine tibia diameter of canaliculi was found to vary from 155 to 844 nm (average 426 nm). [2] In mice humeri it varies from 80 to 710 nm (average 259 nm), while diameter of osteocytic processes varies from 50 to 410 nm (average 104 nm).
X 100. a, Haversian canals; b, lacunae seen from the side; c, others seen from the surface in lamella, which are cut horizontally. Nucleated bone cells and their processes, contained in the bone lacunae and their canaliculi respectively.
Canals on the National Register of Historic Places in Ohio (3 P) Pages in category "Canals in Ohio" The following 12 pages are in this category, out of 12 total.
Pages in category "Canals on the National Register of Historic Places in Ohio" The following 3 pages are in this category, out of 3 total. This list may not reflect recent changes .