What does articular cartilage do at the ends of long bones?

• A. Helps in bone formation
• B. Cushions against impact during movement
• C. Acts as a muscle attachment site
• D. Covers the surface of the periosteum

Answer: (B)

Articular cartilage plays a crucial role at the ends of long bones by providing a smooth surface for joint movement and cushioning against impact. This specialized tissue allows the bones to glide over one another with minimal friction during movement, which is essential for maintaining joint health and function. The cushioning effect helps absorb shock and distribute loads during activities such as walking, running, or jumping, ultimately protecting the underlying bone and enhancing overall joint stability.

This function is vital in preventing wear and tear on the bone surfaces, which can lead to joint pain and conditions such as osteoarthritis if damaged. Therefore, the roles of articular cartilage in facilitating smooth movement and absorbing impact are key aspects of its importance in the skeletal system.