Chapter 9 Review ~ Nail Structure and Growth Flashcards
The skin that surrounds the nail plate is the ___.
Nail fold
The end portion of the nail plate that reaches over the fingertip is called the ___.
Free Edge
The nail unit consists of basic parts which are the nail bed, matrix bed, nail plate, and ___.
Cuticle
Specialized Ligaments
Nail Folds
The technical term for the nail is ___.
Onyx
The hardened keratin plate covering the nail bed is the ___.
Nail Plate
The visible portion of the nail that rests upon, and is attached to, the nail bed is called the ___.
Nail Body or Plate
The average rate of growth of fingernails in normal adults is ___.
1/10 inch per month
The blood vessels that provide nourishment for growth of the nail are found in the ___.
Nail Bed
The thin layer of tissue between the nail plate and the nail bed is the ___.
Bed Epithelium
The water content of the nail is between ___.
15 and 25%
Which nail grows the slowest?
Thumb
If the matrix remains healthy, a nail lost through injury will be replaced in about how many months?
Four to Six
If a toenail is lost through injury, how long will it take for replacement?
Eight to Twelve Months
The water content of a nail directly affects the nail’s ___.
Flexibility
Which nail grows the fastest?
Middle Finger
The thin layer of tissue that attaches the nail bed to the nail plate is the ___.
Bed Epithelium
The nail plate is constructed of approximately how many layers of nail cells?
100
The extension of the cuticle at the base of the nail body which partly overlaps the lunula is called the ___.
Eponychium
The dead tissue that tightly adheres to the natural nail plate is the ___.
Cuticle
The tough bank of fibrous tissue that connects bones or holds an organ in place consists of ___.
Ligaments
