Hey there,

Cartilage is a special connective tissue. It is a flexible connective tissue that differs from bone in several ways; it is avascular and its microarchitecture is less organized than bone. It is of 3 types:

1. Hyaline Cartilage
2. Elastic Cartilage
3. Fibrous Cartilage

Hyaline Cartilage:

• 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. This type of cartilage is predominately collagen (yet with few collagen fibers), and its name refers to its glassy appearance.
• It 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. This type of cartilage is predominately collagen (yet with few collagen fibers), and its name refers to its glassy appearance.

Elastic Cartilage:

• Elastic or yellow cartilage contains elastic fiber networks and collagen fibers. The principal protein is elastin.
• Elastic cartilage is found in the epiglottis (part of the larynx) and the pinnae (the external ear flaps of many mammals, including humans).

Fibrous Cartilage:

• Fibrous cartilage has lots of collagen fibers (Type I and Type II), and it tends to grade into dense tendon and ligament tissue. White fibrocartilage consists of a mixture of white fibrous tissue and cartilaginous tissue in various proportions.
• It is the only type of cartilage that contains type I collagen in addition to the normal type II.

Hope it helps.