Bone Development

Bone Development

Storyboard Text

  • This HPW3C class is really stressing me out, but I'm excited to learn about bone growth in babies today. What about you? 
  • SCHOOL
  • Girl, relax. You already know i'm only in this class beacuse we getto take the baby home.
  • *Laughter*
  • Good Morning class. today we will be learning about bone growth in babies.
  • CLASSROOM
  • That's right.
  • Ossification. Does anyone know the meaning of this word and the two types of it?
  • Intramembranous Ossification is the direct laying down of bone into the primitive connective tissue (mesenchyme), while Endochondral Ossification involves cartilage as a precursor.
  • CLASSROOM
  • Osteoblasts then lay down Osteiod and Collogen fibers form inside. The Osteoblasts are entrapped within the Osteiod and Spicules are later formed.
  • Blood Vessels condence and form Periosterum. All of this leads to the formation of Lamellar bone.
  • In Intramembranous Ossification Mesenchyme within the Embroyonic Fibrous Connective Tissue differentiate into Osteoblasts.
  • ZzZzZzZz
  • KEVIN WAKE UP!
  • HhHhMmMm 
  • Huh? What? Me? Umm Ms. I wasnt sleeping, my eyes were closed because I was just picturing the bone coming together as you were talking.
  • Anyways, as I was saying next is the Endochondral Ossification. this all begin in the developing fetus.
  • Controblasts begin secreting Cartilaginous Matrix that form Hyaline Cartilage made for bone development.
  • Chondrocytes within the ceter begin to resorb some of the surrounding cartilage Matrix.
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