it is the formation of bones. This is the principal role of calcitriol. It requires both calcium and phosphate.
Deposition is to depose someone with sworn evidence. Sentences using this word are:- Janie's deposition was read to the court since she couldn't appear.- Sara was in the hospital so her mom read her deposition of the case to the lawyer.- Aaron's deposition proved that Corey was guilty of theft.
"Depose" is usually considered the root word.
In the context of physical sciences, deposition refers to the phase transition in which a gas transforms directly into a solid without passing through the liquid phase. The temperature at which deposition occurs is known as the deposition temperature and is specific to the substance undergoing the process. The deposition temperature is determined by the interplay of factors such as pressure, temperature, and the physical properties of the substance involved. It is crucial in various fields like materials science, chemistry, and geology for understanding processes like thin film deposition and mineral formation.
deposition, desublimation
Eroision
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.
Bone deposition by osteoblasts can be decreased by several factors, including hormonal changes such as decreased levels of estrogen and testosterone, which are crucial for bone health. Additionally, a deficiency in key nutrients like calcium and vitamin D can impair the function of osteoblasts. Certain medical conditions, such as osteoporosis, as well as prolonged inactivity or immobility, can also lead to reduced osteoblast activity and bone 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.
The gland responsible for stimulating the deposition of calcium in the bone is the thyroid gland, which releases the hormone calcitonin. Calcitonin helps lower blood calcium levels by promoting the uptake of calcium into the bones and inhibiting osteoclast activity, which breaks down bone. This process is essential for maintaining calcium homeostasis in the body and ensuring proper bone health.
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.
Specifically is the deposition of crystals of calcium phosphate that cause the replacing cartilage by bone, that is, chondrocytes are replaced by osteoclasts.
A protein secreted by osteoblasts during bone deposition is collagen. The collagen is put down in layers parallel to the long axis of the bone alternating with layers at right angles to the long axis of the bone, kind of in a cross-hatching pattern.