Intramembraneous ossification starts in connective tissue from mesenchymal cells that become osteoblasts. These osteoblasts cluster togehter into an ossification center. Endochondral ossification starts with a hyaline cartilage template. Mesenchymal cells become osteoblasts and begin forming bone around the cartilage.
Noun. 1. farm bill-a statute that would regulate farm production and prices.oun. 1. farm bill-a statute that would regulate farm production and prices.
Definition of bill. 1 biology : the jaws of a bird together with their horny covering a duck's bill. 2 biology : a mouthpart (as the beak of a turtle) that resembles a bird's bill. 3 nautical : the point of an anchor fluke â see anchor illustration.