Ch. 9 Nail Structure & Growth Flashcards
What is the technical term for the natural nail?
Onyx
The water content of the nail is between:
15 and 25 percent
The water content of a nail directly affects the nail’s:
flexibility
The nail unit consists of basic parts, which are the nail bed, matrix, nail plate, and:
cuticle, eponychium, perionchium, hyponychium, specialized ligaments, and nail folds
The hardened keratin structure covering the nail bed is the:
nail plate
The most visible and functional part of the nail unit is called the:
nail plate
The nail plate is constructed of approximately how many layers of nail cells?
100
The end portion of the nail plate that reaches over the fingertip is called the:
free edge
The blood vessels that provide nourishment for growth of the nail are found in the:
nail bed
What is the thin layer of tissue that attaches the nail plate and the nail bed?
Bed epithelium
The living skin at the base of the natural nail plate that covers the matrix area is known as the:
eponychium
The whitish, half-moon shape at the base of the nail is known as the:
lunula
The dead tissue that tightly adheres to the natural nail plate is the:
cuticle
The tough bank of fibrous tissue that holds an organ in place consists of:
ligaments
The skin that surrounds the nail plate is known as the:
nail fold
