Question 15

Hyaline cartilage is found in the rib cage.

The rib cage is primarily composed of hyaline cartilage, which provides flexibility and support, allowing for the expansion and contraction necessary for breathing.

A) Bone

Bone is a hard tissue that forms the skeleton and provides structure and support for the body. It is not found in the rib cage in the same functional capacity as cartilage, which is crucial for the flexibility and movement of the ribs.

B) Hyaline

Hyaline cartilage is the correct answer as it is the type of cartilage that makes up the costal cartilage connecting the ribs to the sternum. This type of cartilage is smooth and allows for the necessary movement and expansion of the rib cage during respiration.

C) Fibrocartilage

Fibrocartilage is a tougher, more durable type of cartilage that is designed to withstand tension and pressure, found in areas such as intervertebral discs and the pubic symphysis. It is not the primary type of cartilage in the rib cage, as this structure requires more flexibility than fibrocartilage provides.

D) Elastic

Elastic cartilage contains a higher proportion of elastic fibers, providing flexibility and resilience, as seen in structures like the ear and epiglottis. However, it is not found in the rib cage, which relies on the supportive yet flexible properties of hyaline cartilage instead.

Conclusion

Hyaline cartilage is essential for the functionality of the rib cage, allowing it to expand and contract during breathing. The other options—bone, fibrocartilage, and elastic cartilage—do not fulfill the same role and are not present in the rib cage's structure. Thus, hyaline cartilage is definitively the correct answer.