Fill in the Blanks A&P zones of epiphyseal plateOnline version unit 2/lab 2 by Kirsten Storemski 1 rapid calcification Chondrocytes proliferation Osteoblasts plate chondrocytes epiphyseal least resting hypertrophy Four zones of the . Zone of cartilage is the closest to the epiphysis . It has the cell activity . The zone of has mitotic division . The zone of that has that lay down matrix . The zone of has the oldest cells . die and blood vessels infiltrate . migrate and lay down bone matrix . Epiphyseal activity until 12 - 25 years old .