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 Type I collagen forms fibers and is found in most connective tissues with bone, ligaments, tendon and skin having the high concentrations of type I collagen. 2  Type II collagen forms fibers but are less well organized than type I fibers. 3  They are found mainly in cartilage.artilage is a specialized form of connective tissue that is found throughout the body, including joints, ear, nose and trachea. Cartilage is avascular and contains type II collagen fibers that are thinner than type I fibers and are very stable.