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  1. For his project Tim chose to describe stages of bone repair after a fracture. He drew a picture divided into sections with each section representing a step of this process. First section of the picture shows a bone being fractured and therefore compromised. Second part explains what happens next. According to the drawing a hematoma is formed around the fractured area. The blood flows to the area. Some cells die, pain and swelling are accruing. He named a third pard ‘inflammation’, referring to the ongoing process of blood work in the area of fracture. Fourth part is named ‘fibrovascular’. During this step blood vessels regrow in order to establish uninterrupted blood supply between both sides of the structure and start the active healing process. This stage is characterized by soft callus formation. It is formed by granulated tissue. The main goal is to rejoin both sides of the fracture and provide a bridge frame for future bone formation. And we can see it on part four as a drawing of a web-like structure which resembles a mesh which provide a base for bone growing. Next part calls ‘bone formation’ and we no longer are observing the mesh of soft callus. Instead, bony callus filled the gap. The work has continued both from inside and outside of the former fracture. All blood supplies are reestablished and fracture is entering its last healing stage, the ‘bone remodeling’. Osteoblastic activity is increased to form new bone. Compact and spongy bone will replace bony callus and the area becomes more stable.
    Nice drawing, Tim!

    Katie Dragnev

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