Bony tissue is arranged in concentric rings called osteons (or Haversian systems). Consider what you learned...

Bony tissue is arranged in concentric rings called osteons (or Haversian systems).

Consider what you learned about intracellular communication from chapter 4, and explain the following:

How osteocytes communicate with each other
What role is played by the lacunae, the canaliculi, the central arteries and the perforating arteries (Volkmann's arteries).
Additionally, consider cellular growth, nutrition, and repair in relation to osteocytes.

Expert Solution

Dear Student,

* Osteocytes are trapped osteoblasts. They communicate with each other by tiny canals called Canaliculi.

*Lacunae are small spaces between the lamella and they harbor Osteocytes

Canaliculi are tiny canals located in the long cytoplasmic extensions . They are used as a communicating channel between Osteocytes and they provide route by which the nutrient supply to Osteocytes is carried out.

Central artery is also called as nutrient artery ,which enters the bone.

Volkmann's arteries are the perforating arteries of bone and they run from periosteum into the bone and communicate with the harvesian canals.

* Osteocytes have a stellate shape cells. They are around 7 and 15 micrometers in width and length respectively. They are formed from osteoblasts.The cell exhibit Golgi apparatus, mitochondria ,reduced endoplasmic reticulum ,cell processing which are radiating towards mineralizing matrix, etc.

Nutrients are provided to the Osteocytes by blood vessels and are exchanged through Canaliculi

Osteocytes play a very important role in the repair of bone as they are bone forming cells and thereby maintaining the strength and health of the bone matrix.

Hope you are clear.

?

Sydney Mullin answered 2 years ago

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