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How are bones made?

Answer
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Hint: In most vertebrate animals, a bone is a hard tissue that forms part of the skeleton. Bones serve a variety of functions from protecting the body's different organs, generating red and white blood cells, storing minerals, providing the body structure and support, and allowing mobility. Collagen and calcium phosphate, the two main components of this substance, differentiate bone from other hard tissues like chitin, enamel, and shell.

Complete answer:
Bone production, also known as ossification, is the process of making new bone. In humans, ossification begins around the third month of pregnancy and lasts until late adolescence. The procedure is divided into two types: compact bone, which makes up about the skeleton, and cancellous bone, which includes portions of the skull, shoulder blades, and the extremities of the limbs.
The skeletal system of an embryo is made up of fibrous membranes and hyaline cartilage in the early stages of development. The process of bone formation, ossification (osteogenesis), occurs in the sixth or seventh week of embryonic life.
Intramembranous ossification and endochondral ossification are the two osteogenic routes, although mature bone is the same regardless of which one generates it.
Sheets of mesenchymal (undifferentiated) connective tissue during intramembranous ossification form compact and spongy bone. Intramembranous ossification on the other hand gives rise to the flat bones of the face, the majority of the cranial bones, and the clavicles (collarbones).
Bones are formed by replacing hyaline cartilage in endochondral ossification. Cartilage does not deteriorate into bone. Instead, cartilage acts as a blueprint for new bone to replace it fully. Intramembranous ossification takes significantly longer than endochondral ossification. Endochondral ossification is the formation of bones near the base of the skull and long bones.

Note:
Bones in conjunction with muscles and joints help in the structural framework of human bodies and allow us to move freely. The musculoskeletal system is what it's called. The skeleton serves protecting function by safeguarding sensitive internal organs including the brain, heart, and lungs while supporting and shaping the body. In addition to structural support and protective functions, bones are the reservoir of calcium in the body.