Final answer:
The nail plate primarily functions to protect the nail bed, provides a hard surface for enhanced tactile sensation and gripping, and is composed of densely packed dead keratinocytes.
Step-by-step explanation:
The function of the nail plate is primarily to protect the nail bed beneath it. This protection is crucial as the tips of our fingers and toes experience significant mechanical stress and are the farthest extremities. In addition, the nail plate provides a stable and hard surface for enhanced tactile sensation and aids in gripping small objects. The nail bed which the nail plate covers is rich in nerve endings that allow for enhanced sensory perception. The nail plate itself is made of densely packed dead keratinocytes, which contribute to its hardness and protective capability.