In addition to tracheal/bronchial rings, hyaline cartilage is found in physes (growth plates), articular surfaces, larynx, nose, and the ventral portions of the ribs. In the fetus, it serves as a temporary skeleton until it is replaced by bone.
Lab 3: Cartilage & Bone
Hyaline cartilage is somewhat flexible and resilient. It can withstand a considerable amount of compression and tension. The matrix contains collagen fibrils (not fibers), as well as glycosaminoglycans (GAGs). The fibrils are arranged in accordance with the stress placed on the cartilage. The GAGs trap large amounts of water, allowing the tissue to be avascular yet have a high diffusion rate. The hydrated matrix also acts as a shock absorber, an important feature for articular cartilage.
The cartilage is enclosed by the fibrous perichondrium, except on articular (joint) surfaces. Appositional growth occurs from the chondroblasts that come from the perichondrium. The clusters of chondrocytes in the matrix are isogenous groups which represent interstitial growth.