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.
Types of Cartilage. There are three major types of cartilage: hyaline cartilage, fibrocartilage, and elastic cartilage. Hyaline Cartilage. Hyaline cartilage is the most widespread cartilage type and, in adults, it forms the articular surfaces of long bones, the rib tips, the rings of the trachea, and parts of the skull.