Chpt. 8 - Nail Structure & Growth Flashcards
Nails are an appendage of the skin and are part of what body system?
INTEGUMENTARY
A healthy nail is smooth, shiny, & _____?
TRANSLUCENT
The portion of the living skin on which the nail plate sits is the _____?
NAIL BED
The hard protective plate found at the ends of fingers and toes are _____?
NATURAL NAILS
The area under a healthy nail plate should appear _____?
PINKISH
A main protein that is found in natural nails is _____?
KERATIN
The nail bed is attached to the nail plate by a thin layer of tissue called the _____?
BED EPITHELIUM
Nail cells are formed in what part of the nail structure?
THE MATRIX
The nail plate is guided and helped along during its growth by a thin layer of tissue called _____?
BED EPITHELIUM (nail groove???? check!)
The matrix continues to create new cells provided that _____?
IT RECEIVES NUTRITION AND IS KEPT HEALTHY
The visible part of the matrix that extends from underneath the living skin is the _____?
LUNULA
The most visible and functional part of the nail module is the _____?
NAIL PLATE
The nail plate is constructed of how many layers of cells?
100
The part of the nail plate that extends over the tip of the finger or toe is the ____?
FREE EDGE
The dead, colorless tissue attached to the nail plate is _____?
THE CUTICLE
The living skin at the base of the nail plate covering the matrix is the _____?
EPONYCHIUM
Tough bands of fibrous tissue that connect bones are _____?
LIGAMENTS
The slits or furrows on the sides of the nail plate are ______?
NAIL GROOVES
The length, width, and curvature of nails are determined by the shape of what?
THE MATRIX
In the normal adult, the average rate of nail growth is about ______?
1/10” PER MONTH
A healthy natural nail will continue to grow provided there is no damage to what?
THE MATRIX
Replacement of the natural fingernail usually takes how long?
4-6 months
What fingernail grows the fastest?
MIDDLE FINGER
The nail has a water content between?
15%-25%
BED EPITHELIUM?
Thin layer of tissue between the nail plate and nail bed.
CUTICLE?
Dead tissue that tightly adheres to the nail plate.
EPONYCHIUM?
Living skin at the base of the nail plate covering the matrix area.
FREE EDGE?
Part of the nail plate that extends over the tip of the finger or toe.
HYPONICHIUM?
The slightly thickened layer of skin that lies beneath the free edge of the nail plate.
LIGAMENT?
Tough bank of fibrous tissue that connects bones or holds an organ in place.
LUNULA?
Whitish, half-moon shape at the base of the nail plate, caused by the reflection of light off the surface of the matrix.
MATRIX?
Area where the natural nail is formed; this area is composed of matrix cells that make up the nail plate.
NAIL BED?
Portion of the skin that the nail plate sits on.
NAIL FOLD?
Fold of normal skin that surrounds the nail plate.
NAIL GROOVE?
Slit of furrow on the sides of the nail.
NAIL PLATE?
Hardened keratin plate covering the nail bed.
NAIL UNIT?
All the anatomical parts of the fingernail necessary to produce the natural nail plate.
NATURAL NAIL?
The hard protective plate of the nail composed mainly of keratin.
ONYX?
The technical term for nail of the fingers or toes.
