Bone formation
Storyboard Text
- 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?
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