copy 2 Flashcards
(10 cards)
How do canals communicate within bone?
Through transverse perforating canals (Volkmann canals)
How do all cells of an osteon receive nutrients and oxygen?
From vessels in the (haversian) central canal.
What is found between successive lamellae?
Lacunae
How do adjacent osteocytes communicate?
Via gap junctions.
What are remnants of previous concentric lamellae called?
Interstitial lamellae.
What type of bone is trabecular bone?
Lamellar bone
Where is trabecular bone principally found?
In the axial skeleton and in the epiphyses and metaphysis of long bones
What is the structure of trabecular bone?
A highly porous network of rod- and plate-shaped trabeculae surrounding interconnected pore spaces filled with bone marrow
Are trabeculae made of osteons?
No trabeculae are made of lamellar bone but do not contain osteons
What is the primary function of osteoblasts?
To produce the organic components of the bone matrix including type I collagen fibers proteoglycans and matricellular glycoproteins
