Q. _____acts as a shock absorber when tibia and femur come together.

 2127  206 Structural Organisation in Animals Report Error

Solution:

Cartilage is a watery substance, made up of 65 to of water plus collagen and proteoglycans which form the cartilage matrix and special cells called chondrocytes. Collagen and proteoglycans are the substances which confer the amazing resilience and shock absorption qualities of cartilage and make it possible for the ends of the bones to slide effortlessly and smoothly across each other.