Do you know that there are two different process of bone formation.
Yes! The intramembranous ossification and the endochondral ossification.
Do you know how they differ from each other?
No, but I think it will be discussed later in class.
Good morning everybody, today's lesson will be about bones and how they are formed. There are two major modes of bone formation, or osteogenesis, and both involve the transformation of a preexisting mesenchymal tissue into bone tissue.
Endochondral Ossification - The process of bone development from hyaline cartilage.- Important in the formation of long bones- Takes longer time-Stops at year two - Indirect bone growth.
Intramembranous Ossification - The process of bone development from fibrous membranes.- Important in the formation of flat bones- Takes less time to form- Stops at year 18 in female and 21 in male-Direct bone growth
That will be discussed tomorrow.
But why does intramembranous ossification stop at 18 for us females but 21 for males?