6. Bone Growth

Question 1

What does the epiphyseal plate do

Answer 1

allow for lengthwise growth of long bones during childhood

Is between the epiphysis and diaphysis

Question 2

When new cartilage is formed the old cartilage….

Answer 2

Ossifies (turns into bone)

Question 3

Bone replaces cartilage through the action of …..

Answer 3

Osteoblasts

Question 4

During infancy and childhood, epiphyseal plate activity is stimulated by

Answer 4

Growth hormone

Question 5

During puberty, testosterone and estrogens:

Answer 5

▪ Initially promote adolescent growth spurts
▪ Cause masculinization and feminization of specific parts of the
skeleton
▪ Later induce epiphyseal plate closure, ending longitudinal bone growth