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The nail matrix is the active tissue (or germinal matrix) that generates cells. The cells harden as they move outward from the nail root to the nail plate. [3] The nail matrix is also known as the matrix unguis, keratogenous membrane, or onychostroma. [4] It is the part of the nail bed that is beneath the nail and contains nerves, lymph and ...
Lunula (anatomy) The lunula is the white crescent-shaped area at the base of a nail. The lunula (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 ...
File:Human nail anatomy.jpg. Size of this preview: 800 × 593 pixels. Other resolutions: 320 × 237 pixels | 640 × 475 pixels | 1,024 × 759 pixels | 1,280 × 949 pixels | 1,656 × 1,228 pixels. Original file (1,656 × 1,228 pixels, file size: 536 KB, MIME type: image/jpeg) Wikimedia Commons Commons is a freely licensed media file ...
Paronychia is an inflammation of the skin around the nail, which can manifest suddenly, often due to the bacterium Staphylococcus aureus, or gradually, typically caused by the fungus Candida albicans. [2][3][4] The term originates from Greek παρά (para) 'around' and ὄνυξ (onyx) 'nail'. [5][6] Risk factors for paronychia include ...
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 of dead cells ...
Pulmonology. Nail clubbing, also known as digital clubbing or clubbing, is a deformity of the finger or toe nails associated with a number of diseases, anomalies and defects, some congenital. This is mostly of the heart and lungs. [ 2 ][ 3 ] When it occurs together with joint effusions, joint pains, and abnormal skin and bone growth it is known ...
Ingrown nail. An ingrown nail, also known as onychocryptosis from Greek: ὄνυξ (onyx) 'nail' and κρυπτός (kryptos) 'hidden', is a common form of nail disease. It is an often painful condition in which the nail grows so that it cuts into one or both sides of the paronychium or nail bed.
The stratum corneum (Latin for 'horny layer') is the outermost layer of the epidermis. Consisting of dead tissue, it protects underlying tissue from infection, dehydration, chemicals and mechanical stress. It is composed of 15–20 layers of flattened cells with no nuclei and cell organelles. Among its properties are mechanical shear, impact ...