Bone growth Flashcards
Define an osteoblast
An osteoblast is a bone-forming cell.
Define the growth plate
The growth plate is the area between the epiphysis and the diaphysis In a long bone within which bone growth occurs.
When is embryonic cartilage replaced with bone?
Embryonic cartilage begins to be replaced with bone around the eighth week of development in the uterus.
What produces collagen?
Bone-forming cells called osteoblasts produce a protein called collagen.
What do osteoblasts produce?
a protein called collagen
What forms around collagen fibres?
A hard compound (mainly calcium phosphate) forms around the collagen fibres.
How are dormant bone cells formed?
A hard compound (mainly calcium phosphate) forms around the collagen fibres. The osteoblasts become trapped in this hard compound and become dormant bone cells.
The increase in the length of a bone is due to what?
The increase in the length of a bone is due to a growth plate made of cartilage.
The increase in the length of a bone is due to a growth plate made of cartilage.
Where is this plate found?
This plate is found between the epiphysis and diaphysis of the bone.
What is happening in the growth plate?
In the growth plate, cartilage is continually formed and turned into bone (ossified).
What does ossify mean?
Where cartilage is continually formed and turned into bone
When does the growth plate cease to function?
The growth plate ceases to function when the person becomes an adult.
When the growth plate ceases to function when the person becomes an adult, what does this limit?
This limits the growth of the bones and the height of the individual.
The inactivation of what is said to terminate the development of adult height?
The inactivation of the growth plate is said to terminate the development of adult height.
The inactivation of the growth plate is said to terminate what?
The inactivation of the growth plate is said to terminate the development of adult height.
