BIOC21H3 Lecture Notes - Elastic Cartilage, Hyaline, Fibrocartilage
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1. Which of the following regions of bone would not undergo bone remodeling as frequently as the other regions?
spongy bone |
compact bone |
bone subjected to new stresses |
damaged bone |
all of these have similar rates of remodeling |
2. 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 trabecular 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