Osteoblast
Shape: cuboidal
or polygonal , arranged in single layer, cytoplasm is basophilic leaving a
clear area due to golgi complex,
Location :
Osteoblasts are exclusively
located at the surfaces of bone tissue, side by side, in a way that resembles
simple epithelium
Secretion of
osteoblast :
1.
type
I collagen
2.
bone
matrix protein :
3.
osteocalcin ,
4.
osteonectin
,
5.
multiadhesive
glycoprotein : sialoproteins I & II , osteopontin, thrombospondin and
alkaline phosphatase
Functions : calcification of bone
matrix
Histological features of osteoblast
:
1.
shape
usually cuboidal or low columnar
2.
eccentrically
placed oval nuclei
3.
basophilic
cytoplasm
4.
white
area within cytoplasm due to golgi complex
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