Cartilage as the cricoid cartilage and carina. Cartilage is composed of specialized cells called chondrocytes that produce a large amount of collagenous extracellular matrix, abundant ground substance that is rich in proteoglycan and elastin fibers. Cartilage is classified in three types, "elastic cartilage", "hyaline cartilage" and "fibrocartilage", which differ in relative amounts of collagen and proteoglycan. Cartilage does not contain blood vessels (it is avascular) or nerves (it is aneural). Nutrition is supplied to the chondrocytes by diffusion. The compression of the articular cartilage or flexion of the elastic cartilage generates fluid flow, which assists diffusion of nutrients to the chondrocytes.
Italian Journal of Anatomy and Embryology which is the "anatomy and embryology of vertebrates."" In contrast, Romagnoli defended the journal's decision to publish the paper, saying that it was within the journal's scope because it pertains to “issues related to the biology of pregnancy and prenatal development and with the tissues of the immune system”. Italian Journal of Anatomy and Embryology The Italian Journal of Anatomy and Embryology (sometimes abbreviated as the IJAE) is a quarterly peer-reviewed academic journal of anatomy and embryology. It was established in 1901 by Giulio Chiarugi and is published by Firenze University Press. It is the official journal of the Italian