Numbering [edit]. Bus routes operating in or through Virginia are noted with a letter and a number. Bus routes operating in DC or Maryland use only a number, or a letter and a number, as noted below.
Cartilage: The three types of cartilage. There are three types of cartilage: 1  Hyaline-most common, found in the ribs, nose, larynx, trachea. 2  Is a precursor of bone. 3  Fibro-is found in invertebral discs, joint capsules, ligaments. 4  Elastic-is found in the external ear, epiglottis and larynx. Hyaline-most common, found in the ribs, nose, larynx, trachea. 2  Is a precursor of bone. 3  Fibro-is found in invertebral discs, joint capsules, ligaments. 4  Elastic-is found in the external ear, epiglottis and larynx.
1 is a form of connective tissue transitional between dense connective tissue and hyaline cartilage. 2  Chondrocytes may lie singly or in pairs, but most often they form short rows between dense bundles of collagen fibres. 3  In contrast to other cartilage types, collagen type I is dominant in fibrous cartilage.lastic Cartilage. 1  occurs in the epiglottic cartilage, the corniculate and cuneiform cartilage of the larynx, the cartilage of the external ear and the auditory tube. 2  corresponds histologically to hyaline cartilage, but, in addition, elastic cartilage contains a dense network of delicately branched elastic fibres.