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The nail plate (corpus unguis) sometimes referred to as the nail body, is the visible hard nail area from the nail root to the free edge, made of translucent keratin protein. Several layers of dead, compacted cells cause the nail to be strong but flexible. Its (transverse) shape is determined by the form of the underlying bone.
Beau's lines are deep grooved lines that run from side to side on the fingernail or the toenail. [1] They may look like indentations or ridges in the nail plate. [2] : 657. This condition of the nail was named by a French physician, Joseph Honoré Simon Beau (1806–1865), who first described it in 1846.
Dermatology. Onychomadesis is a periodic idiopathic shedding of the nails beginning at the proximal end, possibly caused by the temporary arrest of the function of the nail matrix. [1] : 784 [2] : 660 One cause in children is hand, foot, and mouth disease. [3] This generally resolves without complication.
The lunula is the white crescent-shaped area at the base of a nail. The lunula, or ( pl.: lunulae; from Latin 'little moon'), is the crescent-shaped whitish area of the bed of a fingernail or toenail . In humans, it appears by week 14 [1] of gestation, and has a primary structural role in defining the free edge of the distal nail plate (the ...
Shoppers have the option to buy a Dazzle Dry mini kit that includes the nail prep, base coat, top coat, and color polish. There’s even a bonus nail polish thinner included that you can use to ...
Habit-tic deformity. External trauma to proximal nail fold. Habit-tic deformity is a condition of the nail caused by external trauma to the nail matrix. [1] The condition is characterized by ridges which run horizontally across the entire nail, most often occurring on the thumbs, as well as marked damage to or absence of cuticles.
Human anatomy Anatomy of the basic parts of a human nail. In human anatomy, "cuticle" can refer to several structures, but it is used in general parlance, and even by medical professionals, to refer to the thickened layer of skin surrounding fingernails and toenails (the eponychium), and to refer to the superficial layer of overlapping cells covering the hair shaft (cuticula pili), consisting ...
Onycholysis. Onycholysis is a common medical condition characterized by the painless detachment of the nail from the nail bed, usually starting at the tip and/or sides. [1] On the hands, it occurs particularly on the ring finger but can occur on any of the fingernails. It may also happen to toenails.