What is the difference between intramembranous ossification and endochondral ossification?
Intramembranous ossification is the process of bone development from fibrous membranes. Endochondral ossification is the process of bone development from hyaline cartilage. Long bones lengthen as chondrocytes divide and secrete hyaline cartilage. Osteoblasts replace cartilage with bone.
What is the difference between intramembranous ossification and endochondral ossification quizlet?
what is the difference between Intramembranous ossification and endochondral ossification? INTRAMEMBRANOUS OSSIFICATION: forms the flat bones of the skull, face, jaw, and center of clavicle. ENDOCHONDRAL OSSIFICATION: forms most bones in the body, mostly long bones, and replace cartilage with bone.
What is the difference between the two types of ossification?
Ossification in the epiphyses is similar to that in the diaphysis except that the spongy bone is retained instead of being broken down to form a medullary cavity. When secondary ossification is complete, the hyaline cartilage is totally replaced by bone except in two areas.
What is the difference between osteocytes osteoblasts and osteoclasts?
The key difference between osteoblasts and osteocytes is that osteoblasts are a type of bone cells responsible for the formation of new bones while osteocytes are a type of bone cells that maintain the bone mass. On the other hand, osteoclasts are responsible for the resorption of the bone.
What is the key difference between Intramembranous and endochondral bone development quizlet?
5) The primary difference is that in endochondral ossification, bone develops from a cartilage model, whereas in intramembranous ossification, bone develops from mesenchymal cells.
What are the major events of intramembranous ossification and endochondral ossification and how are they different quizlet?
There are two processes: Intramembranous ossification (conversion event) is the direct laying down of bone into the primitive connective tissue (mesenchyme); perichondral membrane converted to osteoblasts. Endochondral ossification (replacement event) involves cartilage as a precursor; cartilage is replaced with bone.
What is the difference between Endochondral?
The main difference between endochondral ossification and intramembranous ossification is that the endochondral ossification is the method of forming a bone through a cartilage intermediate while the intramembranous ossification directly forms the bone on the mesenchyme.
Is Endochondral an ossification?
Endochondral ossification is the process by which the embryonic cartilaginous model of most bones contributes to longitudinal growth and is gradually replaced by bone.
What is the name of the third stage of ossification?
Osteoblast are now called asosteocytes and housed in lacuna.Formation of trabeculae is the third stage of intramembranous ossification. More osteoprogenitorcells rest on surface of calcified bone matrix and differentiate osteoblasts. Osteoblasts add moreosteoid and causes bone matrix to enlarge.
How are mesenchymal cells involved in the ossification process?
Intracartilaginous ossification: Process • At the site where bone is to be formed-mesenchymal cells closely packed to form mesenchymal condensation. • Some mesenchymal cells become chondroblast and lay down hyaline cartilage. • Mesenchymal cells form a membrane on the surface of cartilage called the perichondrium.
What happens to cartilage during intracartilaginous ossification?
Intracartilaginous ossification • In intra cartilaginous ossification → cartilaginous model is formed which is closely resemble the bone to be formed. • This cartilage is subsequently replaced by (not converted into) bone. eg. Almost all of the long bones.
What happens to spongy bone during ossification?
Intramembranous ossification (contd.) • Trabeculae just deep to the periosteum thicken, forming a woven collar which is later replaced with mature lamellar bone • Spongy bone persists internally and its vascular tissue becomes red marrow 15.