Bone Osteogenesis Flashcards
(20 cards)
How does intramembranous ossification derive?
from mesenchymal tiisue into bone w/o cartilaginous precursor
where does appositional bone growth derive?
mesenchymal cells
where does logitudinal bone growth derive?
the physis
what cell is in the periosteum?
blastic cells
what cell is in the endosteal?
clastic cells
what is the characteristic of proliferative zone?
rich in oxygen
what is the maturation and degenration zone AKA?
Columnar zone
what is the function of primary spongiosa?
diminishing thickness of mineralized matrix
bone and calcified cartilage
what is the function of the secondary spongiosa?
no more purple stuff
bone only
in a peds patient, what does the metaphysis consist of?
primary and secondary spongiosa
what is the function of ZPM?
to mineralize calcium and phosphorus
what is the function of the fibrous ring of la croix?
support and stabilize the outer rim of the physis
what is the function of groove of ranvier?
provides cell growth in width and diameter
what is the main function of the periosteum?
make new bone
how many layers of cell in the periosteum?
two
how many cell layers in the endosteum?
one
What is the most vasculaized area in a peds patinets?
metaphyseal is the most vascularized area
when does the epiphysis and metaphysis connect again?
in adluthood
where does the cortex receive its rich vascularity?
periosteal and medullary vessels
what does osteopetrosis tardia result in?
elenmyer flask deformity
