The following are important steps in the process of endochondral ossification. 1.Blood vessels grow around the edges of the cartilage and perichondrium differentiates into osteoblasts.
2)Capillaries and osteoblasts migrate to the epithyses forming the secondary ossification centers.
3)Chondrocytes enlarge and the surrounding matrix begins to calcify.
4)Remodeling continues and the shaft becomes thicker.
5)Blood vessels penetrate the cartilage and invade the central region forming the primary ossification center.
What is the correct order for these events?
A)3,1,5,4,2
B)1,3,5,4,2
C)1,5,3,4,2
D)2,3,1,5,4
E)3,1,4,5,2

Question

Quizplus · Accepted Answer

The correct order for the events in endochondral ossification starts with chondrocytes enlarging and the matrix beginning to calcify (3), followed by blood vessels growing around the edges of the cartilage and differentiation of perichondrium into osteoblasts (1). Then, blood vessels penetrate the cartilage to form the primary ossification center (5), after which remodeling continues to thicken the shaft (4), and finally, capillaries and osteoblasts migrate to the epiphyses to form secondary ossification centers (2).

The Following Are Important Steps in the Process of Endochondral