1. Define the following terms, used in the case and also in associated questions:
a. Hemorrhage
Associated with a large loss of blood. In the case it is the extreme amount of blood lost from her arm wound. Hemorrhage’s can be internal or external
b. Fracture
A fracture is a break, in this case a break in the patients humerus, occipital bone and 3rd Lumbar vertebral body
c. Proximal
Closer to the origin of the body. In this case the fracture at the proximal diaphysis means the part of the shaft closer to the origin of the humerus (the shoulder)
d. Diaphysis
The shaft of the bone which surrounds the medullary cavity. In this patients case the diaphysis (shaft) of the humerus has been fractured 2. One way bones are classified is by…show more content… The fibroblasts produce collagen fibers, which are the fibers found in soft callus fibrocartilage. This is then followed by the callus phase, which involves the osteoblasts depositing disorganized clumps of primitive bone matrix called woven bone (which forms the soft callus). The cells required for fibrocartilaginous callus formation include:
Osteoblasts: build new bone from matrix containing collagen and minerals
Fibroblasts: produce collagen fibers and then become chondroblasts which make cartilage
Chondroblasts: make cartilage at site of repair
7. As a fracture is repaired, new bone is added to the injury site. What term is used to describe the addition of new bone tissue? Identify which bone cell is responsible for this process and explain how it occurs.
Ossification is the term used to describe the addition of new bone. Osteoblasts are responsible for this addition of new bone and they do this by lining the resorption cavity and laying down new bone. They produce matrix which consist of collagen and ground substance to make the new bone and repair the fracture
8. In the final stage of bone repair, some of the osseous tissue must be broken down and removed. What term is used to define the breaking down of osseous tissue? Which bone cell would be best suited for this task?
Bone resorption is the process of breaking down osseous tissue. The osteoclasts, which are derived from macrophages, are the
