Bone Flashcards
What are the functions of bone?
weight bearing
support
mineral store
blood formation
What are the different types of bone you can get?
short flat long irregular sutural (cranium) sesamoid
Where is the cranium found?
The skull
What are the two types of bone formation?
endochondral
intramembranous
What are osteoblasts?
Bone forming cells
What are osteoclasts?
Bone breaking-down cells.
How many cell types are found in bone and what are they called?
Osteoblasts
Osteoclasts
osteocytes
What are osteocytes
mature bone cells
‘sense the effects’
function not well understood
What parts of extracellular matrix make up bone?
collagen,
water
calcium phosphate
What type of bone is found at the ends/ in epiphysis?
Spongy /trabecular bone
What is the medullary cavity filled with?
Bone marrow.
Where is compact bone found?
On the outsides.
What can be seen in histology of compact bone?
Haversian canals. ( circular)
Osteocytes
What can be seen in histology of spongy bone?
More spaced, no haversian systems, spongy bone and tissue.
Where are osteoblasts and osteocytes from?
Mesenchymal stem cells
