§The initial stage in bone production is the secretion of collagen molecules and ground substance by osteoblasts.
§The collagen monomers polymerize rapidly to form collagen fibers.
§The resultant tissue becomes osteoid
§As the osteoid is formed, some of the osteoblasts become entrapped in the osteoid and become quiescent osteocytes.
§Within a few days after the osteoid is formed, calcium salts begin to precipitate on the surfaces of the collagen fibers.
§The precipitates first appear at intervals along each collagen fiber, forming minute nidi that rapidly multiply and grow over a period of days and weeks into the finished product, hydroxyapatite crystals.
hope thats good enough :)
Weathering and erosion break down pre-existing rocks into sediments. Transportation of these sediments by water, wind, or ice to a new location. Deposition and compaction of the sediments to form layers, followed by cementation to create a solid clastic rock.
deposition
Deposition. Erosion is the process of wearing away or carrying away materials, while deposition is the process of dropping or depositing those materials in a new location.
Low deposition rate in sputter deposition can be attributed to factors such as low sputter yield of the target material, insufficient power or pressure to sustain sputtering, inefficient target utilization, or poor target-substrate geometry leading to inefficient material transfer. Increasing any of these factors can help improve the deposition rate in sputter deposition.
Weathering: disintegration, decomposition, deterioration Erosion: abrasion, corrosion, scouring Deposition: accumulation, sedimentation, deposit
ossification.
osteoblasts secrete matrix; bone deposition
Osteoblasts exemplify a positive feedback process in bone mineral deposition. When new bone is formed by osteoblasts, they release proteins that stimulate further osteoblast activity and mineral deposition. This creates a cycle where bone formation encourages more bone formation.
Peak bone mass occurs at ~30 years of age. Afterwards, bone loss starts to outpace bone deposition.
Osteoporosis is the condition in which bone resorption outpaces bone deposition, causing bones to become porous and brittle. This can increase the risk of fractures and other bone-related issues.
Deltas are created by deposition.
The deposition of calcium salts into bone tissue is called mineralization or calcification. This process helps to strengthen and harden the bones, making them more rigid and able to support the body.
Deposition, Compaction, Cementation and Lithification
it is the formation of bones. This is the principal role of calcitriol. It requires both calcium and phosphate.
they all do the same thing, i think
Osteoblasts are responsible for secreting collagen and stimulating calcium phosphate deposition during the process of bone formation.
The addition of new bone on top of existing bone to increase bone thickness is called appositional bone growth. This process involves the deposition of new bone tissue on the outer surface of existing bones.