16.1.3 POJA-L7067+7068+7072 From osteoblast to osteocyte 1
6.1.3 POJA-L7067+7072 From osteoblast to osteocyte 1
16.1.3 POJA-L7067+7068+7072 From osteoblast to osteocyte 1
Title: From osteoblast to osteocyte 1
Description:
(A+B+C): Electron micrographs of progressive desmal ossification in rat bone tissue.
(A):
(1): Osteoblast with numerous Golgi vesicles and secretion vacuoles.
(2): Subosteoblastic layer (osteoid).
(3): Bone matrix with few mineralisation dense spots.
(B):
(4): Bone matrix with progressing mineralisation.
(5): Formative osteocyte without osmiophilic lamina (is a thin very dense outline of the lacuna directly around the osteocyte).
(C):
(6): Dense mineralised bone matrix.
(7): Quiescent osteocyte.
(Red Arrows): Thin cytoplasmic processes in canaliculi.
Background:
Compared to osteoblasts quiescent osteocytes have few RER profiles and few mitochondria. An osmiophilic lamina is a kind of electron-dense boundary of the lacuna. Within the pericellular space some hydroxyapatite crystals might be found. Formative osteocytes show much more RER and multiple Golgi areas, small amount of osteoid (non-mineralised collagen fibres) might be present in the pericellular space and there is no demarcation by an osmiophilic lamina.
See also
Keywords/Mesh: locomotor system, bone, desmal ossification, mineralisation, bone matrix, osteoid, osteoblast, osteocyte, electron microscopy, POJA collection
Title: From osteoblast to osteocyte 1
Description:
(A+B+C): Electron micrographs of progressive desmal ossification in rat bone tissue.
(A):
(1): Osteoblast with numerous Golgi vesicles and secretion vacuoles.
(2): Subosteoblastic layer (osteoid).
(3): Bone matrix with few mineralisation dense spots.
(B):
(4): Bone matrix with progressing mineralisation.
(5): Formative osteocyte without osmiophilic lamina (is a thin very dense outline of the lacuna directly around the osteocyte).
(C):
(6): Dense mineralised bone matrix.
(7): Quiescent osteocyte.
(Red Arrows): Thin cytoplasmic processes in canaliculi.
Background:
Compared to osteoblasts quiescent osteocytes have few RER profiles and few mitochondria. An osmiophilic lamina is a kind of electron-dense boundary of the lacuna. Within the pericellular space some hydroxyapatite crystals might be found. Formative osteocytes show much more RER and multiple Golgi areas, small amount of osteoid (non-mineralised collagen fibres) might be present in the pericellular space and there is no demarcation by an osmiophilic lamina.
See also
- 16.1.3 POJA-L7126+7120+7122 From osteoblast to osteocyte
- 16.1.3. POJA-L7125+7119 From osteoblast to osteocyte 3
- 16.1.3 POJA-L7118+7121+7086 From osteoblast to osteocyte 4
- 16.1.3 POJA-L7052+7053 Development of flat bones 3
- 16.1.3 POJA-L7086B Osteocyte 1
Keywords/Mesh: locomotor system, bone, desmal ossification, mineralisation, bone matrix, osteoid, osteoblast, osteocyte, electron microscopy, POJA collection