Wat is het systeem van Havers?
Een osteon of systeem van Havers (naar de Britse arts Clopton Havers) is een systeem van concentrische lamellen van osteocyten die de te grote gaten van osteoclasten opvullen. Compact bot is opgebouwd uit osteonen. Osteoclasten graven door bot heen om bloedvaten aan te kunnen leggen.
Waar liggen osteoclasten?
Er vindt in het menselijk lichaam voortdurend ombouw plaats van botweefsel. Cellen met de naam osteoclasten breken bot af (osteoclasie), de osteoblasten bouwen bot op. De periode dat de osteoclasten het bot oplossen, wordt osteolyse genoemd. Bij de opbouw van het bot, hebben de osteoblasten calcium nodig.
What is the haversian system?
What is their function? The basic unit of compact bone is the Haversian system which is also called osteon. Each unit consists of four parts: the Haversian canal, lamellae, lacunae, and canaliculi. The Haversian system compromises several channels that facilitate waste disposal, as well as the supply of nutrients.
What is a haversian canal in bone?
The Haversian canals surround blood vessels and nerve fibers throughout the bone and communicate with osteocytes. The canals and the surrounding lamellae are called a Haversian system (or an osteon). A Haversian canal generally contains one or two capillaries and nerve fibers. Compact bone consists of closely packed osteons or haversian systems.
Where is the haversian system found in the bone matrix?
Explanation: A hervasian canal, oesteocyte and lamellae form a Haversian system. This system is found in the bone matrix of long bones like femur, humerus and others. The haversian canals consists of veins, arteries, areolar tissues, nerves and lymph.
Where are trabeculae found in the haversian system?
Trabeculae of bone provide structural support to the spongy bone found at the ends of long bones. Keeping this in view, where is haversian system found? Explanation: A hervasian canal, oesteocyte and lamellae form a Haversian system.