Bone Part 2 Flashcards
Does compact or trabecular bone have more porosity?
Trabecular
What is a primary bone tissue,
Loose packing and poor orientation of mineralized collagen fibrils
Laid down very rapidly and randomly and later replaced by lamellar bone?
Woven bone
What type of bone is most common in young animals, fracture calluses, and some bone tumors?
Woven bone
What is a primary bone tissue mainly found in large and rapidly growing mammals?
Fibrolamellar bone
What is a primary bone tissue,
Concentric lamellae under the periosteum or endosteum
Less vascularized
Remodels into secondary osteons
Circumferential lamellar bone
What is a sequence of structures which “repeat” every year
Found in reptiles long bones?
Circumferential lamelllar bone, lamellar-zonal structure
What is secondary bone tissue- replaced older bone
Blood vessels in center
Run parallel to the long axis or the bone
Cement line around osteon?
Haversian bone
What are the canals called that blood vessels run between osteons and connecting to the periosteum and endosteum?
Volkmanns’s canals
Do primary osteons have a cement line?
No
What are trabecular packets delineated by?
Cement lines
What type of material is bone?
Composite
Bone modeling =
Induce add/remove bone tissue
Bone remodeling =
Induce replacing “dead” bone tissue
What is the key difference between intramembranous and Endochondral ossifications?
Cartilage formation
What are the most common histological structures seen in normal small animal long bones?
Haversian system (secondary osteons)
