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Bone formation
Updated: 8/30/2020
Bone formation
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Storyboard Text

  • Good morning, students! For today's lesson, we are going to talk about the two processes of bone formation
  • Endochondral Ossification vs Intramembranous Ossification
  • BONE
  • Endochondral Ossification vs Intramembranous Ossification
  • BONE
  • Is there anyone of you who knows the difference between the two?
  • Me ma'am! Endochondral is important in the bone formation of long bones while Intramembranous is important in the formation of flat bones
  • Endochondral Ossification vs Intramembranous Ossification
  • BONE
  • Very good, Ms. Garcia! Anybody else?
  • Endochondral Ossification vs Intramembranous Ossification
  • BONE
  • Excellent, Mr. Contreras!
  • Me too ma'am! In endochondral, a cartilage is formed first and the bone is laid down on it while in intramembranous, bone is directly formed on a mesenchyme
  • - Replacement of fetal cartilage skeleton with bone -Takes a longer time to form a bone-Stops at year two -Indirect bone growth
  • Endochondral Ossification vs Intramembranous Ossification
  • - Replacement of thin connective tissue membrane (hyaline cartilage) with bone-Takes less to form a bone-Stops at year 18 in females, and 21 in males-Direct bone growth
  • We will stop here and continue next meeting. Now, I will give you an assignment. Draw and label the steps of endrochondral and intramembranous ossification. That will be all. Good bye and see you next meeting!
  • Okay, class. So, written on the board are the other differences between the two processes of bone formation
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