Which of the following is a primary component of elastic cartilage?

• A. Elastic fibers
• B. Osteocytes
• C. Adipocytes
• D. Collagen type I fibers

Answer: (A)

Verified step by step guidance

1. Understand the structure and function of elastic cartilage: Elastic cartilage is a type of cartilage found in areas requiring flexibility and resilience, such as the external ear and epiglottis. It is characterized by the presence of elastic fibers, which provide elasticity and strength.
2. Review the components of elastic cartilage: Elastic cartilage primarily consists of chondrocytes (cartilage cells) embedded in a matrix rich in elastic fibers. These fibers are composed of elastin, a protein that allows tissues to stretch and return to their original shape.
3. Differentiate elastic fibers from other components: Elastic fibers are distinct from collagen fibers, which are more rigid and provide tensile strength. Collagen type I fibers are primarily found in bone and dense connective tissues, not elastic cartilage.
4. Eliminate incorrect options: Osteocytes are bone cells, not cartilage cells, and adipocytes are fat cells, which are not components of elastic cartilage. Collagen type I fibers are not a primary component of elastic cartilage either.
5. Conclude that elastic fibers are the primary component of elastic cartilage, as they are responsible for its unique properties of flexibility and resilience.