CAS BI 106 Lecture Notes - Lecture 7: Intramembranous Ossification, Endochondral Ossification, Hyaline Cartilage
Document Summary
Can begin with spontaneous bone development within a sheet of connective tissue (formation of a bone within a membrane)- intramembranous ossification. Or, can begin with a model of hyaline cartilage, and then becomes bone over time - endochondral ossification. Starts with hyaline cartilage and slowly turns into bone. Epiphyseal plate- growth plate, when you have a fully formed bone tissue, it cannot get longer. Bones can grow longer by first expanding their epiphyseal plates. Once you convert the plate to bone, it can no longer grow. Because the new growth occurs from the interior of the tissue, this is called interstitial growth. Age of epiphyseal plate fusion has been determined on male skeletons. Recently it was discovered that female skeletons plates fuse on average 1-2 years early. Both bone and cartilage can get wider over time, they are surrounded by a perichondrium or periosteum, and the inner layer is capable of ossification.
