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.
Other types of cartilage include elastic, which typically has dense fibers and abundant collagen. Elastic cartilage is often found in the larynx, outer part of the ear, inside the auditory canal, and in the eustachian tube between the middle ear and the throat.yaline cartilage appears on the ends of bones where they form joints. Hyaline cartilage can be found in the larynx. Hyaline cartilage connects the ribs to the sternum.