What is the nail plate primarily composed of?

The nail plate is primarily composed of keratin, which is a type of fibrous protein that forms the structure of hair, skin, and nails. Keratin is essential for providing strength and resilience, making nails durable and protective. The unique arrangement of keratin fibers in the nail plate allows it to be both hard and flexible, contributing to its overall function and appearance.

In contrast, collagen, elastin, and glycogen serve different roles in the body. Collagen is a primary structural protein found in connective tissues, providing elasticity and support but is not a component of the nail plate itself. Elastin, similar to collagen, contributes to the elasticity of tissues but is also not found in the composition of nails. Glycogen is a polysaccharide that serves as an energy storage form in the body and is not related to the structural makeup of the nail plate. This highlights the specific role of keratin in the anatomy of nails, emphasizing its importance in nail health and integrity.