The longitudinal growth of long bones ceases when
A)chondroblasts take over mitosis of osteoblasts.
B)the epiphyseal plate is completely replaced with bone tissue.
C)the periosteum is completed.
D)the epiphysis becomes separated from the diaphysis.
E)the bone marrow forms.

Question

Quizplus · Accepted Answer

Longitudinal growth of long bones occurs at the epiphyseal plate, which is made up of cartilage. As the cartilage cells divide and the matrix calcifies, new bone tissue is formed on the diaphysis side of the plate, pushing the epiphysis away and causing the bone to grow longer. Eventually, the epiphyseal plate is completely replaced with bone tissue, and longitudinal growth ceases. This process is known as epiphyseal closure or fusion, and it typically occurs between the ages of 18 and 25.

The Longitudinal Growth of Long Bones Ceases When