DIVE Biology Quarterly Exam 4 Practice

Articular cartilage is the specific type of cartilage that covers the surfaces of the epiphyses in long bones, facilitating smooth joint movement. This specialized cartilage provides a cushioning effect between adjacent bones and helps reduce friction during movement. Its structure is designed to withstand compressive forces and distribute loads, which is essential in maintaining joint health and function.

In contrast, fibrocartilage is denser and stronger, typically found in intervertebral discs and symphyses, where greater tensile strength is needed. Hyaline cartilage, while it is a component of articular cartilage, is also found in other areas such as the costal cartilages and the embryonic skeleton but does not specifically refer to the cartilage at joint surfaces. Elastic cartilage, on the other hand, offers flexibility and is found in structures such as the ear and epiglottis, which again does not apply to the cushioning between bones at joints. Thus, selecting articular cartilage reflects an understanding of its unique role in joint health and function.