Question

question 1 in endochondral ossification, blood vessels penetrate and invade the central region of the cartilaginous model. this first area that is invaded is called the ____________ secondary ossification center epiphysis primary ossification center metaphysis i dont know yet

Explanation:

In endochondral ossification, the primary ossification center is the first area of the cartilaginous model invaded by blood - vessels. The secondary ossification center appears later, the epiphysis is the end part of a long bone, and the metaphysis is the region between the diaphysis and epiphysis.

Answer:

C. primary ossification center