Nails. Flashcards
The study of the structure and growth of the nails is called
Onychology
The part of the bail that extends beyond the end of the finger and protects the tips of the fingers or toes
Free edge
The visible nail area from the nail root to free edge; made of layers and there are no nerves or blood vessels here
Nail body
OR nail plate
The folds of skin of either side of the nail groove
Nail wall
The half-moon shape at the base of the nail, which appears white due to a reflection of light at the point where the nail matrix and nail bed meet
Lunula
The cuticle that overlaps the lunula at the base of the nail
Eponychium
The loose and pliable overlapping skin around the nail
Cuticle
The active tissue that generates cells, which harden as they move outward from the root of the nail
Nail matrix
This is attached to the matrix at the base of the nail, under the skin and inside the mantle
Nail root
A pocket-like structure that holds the root and matrix
Mantle
The area of the nail on which the nail body rests; nerves and blood vessels are found and supply nourishment
Nail bed
ligaments attach the nail bed to the bone
The tracks on either side of the nail that the nail moves on as it grows
Nail grooves
The skin that touches, overlaps and surrounds the nail
Perionychium
The skin underneath the free edge
Hyponychium
Growth of a new nail plate would take?
4-6 months
Nails grows at an average rate of
1/8th inch per month (adults)
*growth of nails is faster when you are younger because of general cell reproduction is occurring faster; therefore, growth of nails slows as one ages
Nail growth is faster in BLANK and slower in BLANK
Faster - summer
Slower - winter
Which nail grows the slowest? Fastest?
Slowest - thumb
Fastest - middle finger
Toe nails are harder and thinker than finger nails and tend to grow?
Slower
Permanent distortion a of nails occur when:
- A nail is lost for to trauma and, without the protection of the nail plate, the nail bed or matrix is injured
- A nail is lost through disease or infection. The regrown nail, in this case is often distorted in shape
Any disease, disorder or condition of the nail is called
Onychosis
Disease present?
Disorder present?
Condition present?
Can you perform nail service?
Disease - no
Disorder - yes, with care
Condition - yes
The cause of the disease, disorder or condition is called?
Etiology
What are the six signs of infection in the nails and hands?
Pain, swelling, redness, local fever, throbbing and pus