Final answer:
Viscoelastic tissues exhibit different stiffness and strength when loaded at different speeds. One example is cartilage in the human body.
Step-by-step explanation:
A tissue that exhibits different stiffness and strength when loaded at different speeds is called viscoelastic. Viscoelastic materials display both elastic and viscous properties, meaning they can deform under stress and also dissipate energy over time.
One example of viscoelastic tissue in the human body is cartilage. When subjected to rapid loading, such as jumping or running, cartilage becomes stiffer and provides greater support. However, under slow and sustained loading, such as standing or sitting for long periods, cartilage gradually softens and becomes more flexible.
This viscoelastic behavior allows tissues to respond and adapt to various mechanical demands, providing optimal performance and protection for the body.