Question

what is the purpose of the primary ossification center?
a.) to produce osteoblasts
b.) to create the periosteum
c.) to convert the diaphysis to osseous tissue
d.) to form the medullary cavity

Explanation:

The primary ossification center appears in the diaphysis (shaft) of long bones during endochondral ossification. Its main function is to convert the cartilage - based diaphysis into osseous (bone) tissue. Osteoblasts are produced by osteogenic cells in general bone formation processes, not specifically the role of the primary ossification center. The periosteum is formed from the outer layer of the primitive bone structure (not the primary ossification center's main role). The medullary cavity is formed later through the action of osteoclasts as the bone develops further, not the primary function of the primary ossification center.

Answer:

C. To convert the diaphysis to osseous tissue