Question

question
put the steps in the repair of a fracture in order.

1. the cartilage of the external callus has been replaced by bone and struts of spongy bone now unite the broken ends. fragments of dead bone and the areas of bone closest to the break have been removed and replaced.
2. immediately after the fracture, extensive bleeding occurs. over a period of several hours, a large blood clot, or fracture hematoma, develops.
3. a swelling initially marks the location of the fracture. over time, this region will be remodeled, and little evidence of the fracture will remain.
4. an internal callus forms as a network of spongy bone unites the inner edges, and an external callus of cartilage and bone stabilizes the outer edges.

answer
3,2,1,4
4,1,3,2
4,2,3,1
2,4,1,3
i dont know yet

Explanation:

The process of fracture repair starts with bleeding and hematoma formation right after the fracture (step 2). Then, an internal and external callus form to stabilize the bone (step 4). After that, the cartilage of the external callus is replaced by bone and dead - bone fragments are removed (step 1). Finally, the fracture site is remodeled (step 3).

Answer:

2, 4, 1, 3