What gives cartilage its resiliency?

• A. Water content of cartilage lends resiliency
• B. Rich blood supply
• C. Nervous innervation
• D. Mineral deposits in matrix

Answer: (A)

Resiliency in cartilage comes from its hydrated extracellular matrix. The matrix is rich in proteoglycans that trap a lot of water, creating hydrostatic (osmotic) pressure within the tissue. This water-filled gel allows cartilage to resist compressive forces and then rebound after the load is removed, giving it that springy, cushiony feel. While collagen provides a sturdy framework, the water content is what enables the tissue to be both supportive and resilient. Remember, cartilage is largely avascular and relies on this water-rich matrix for its mechanical properties; options like a rich blood supply or nerve fibers aren’t present, and mineral deposits would make tissue stiffer, not more resilient.