What maintains chitin in exoskeleton?

Chitin in the exoskeleton of arthropods is maintained by a combination of structural proteins and minerals, such as calcium carbonate, which provide strength and rigidity. This polysaccharide forms a long-chain polymer that, when cross-linked with proteins, creates a tough and flexible matrix. Additionally, the exoskeleton undergoes periodic molting, allowing for growth and regeneration of the chitinous structure. Through this process, the integrity and functionality of the chitin are preserved.