Biology Forums - Study Force

Which is the proper sequence of steps in the healing of a fracture (the steps are listed below but are not in the correct sequence of events):
1 osteoblasts form trabeclular bone that joins together the fractured ends of the bone and bony callus replaces fibrocartilage callus
2 bone remodeling occurs and compact bone replaces the spongy bone around the periphery of the fracture site
3 fibroblasts and chondrocytes from the periosteum form the fibrocartilage callus
4 a fracture hematoma forms and bone cells in the region of the fracture die
5 phagocytes and osteoclasts begin to remove the dead cells and damaged tissue around the hematoma

a) 4, 5, 1, 2, 3
b) 5, 4, 3, 1, 2
c) 4, 5, 2, 3, 1
d) 3, 1, 2, 4, 5
e) 4, 5, 3, 1, 2

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