Eponychium

Eponychium
Fingernail
Longitudinal section through nail and its nail groove (sulcus). (Eponychium labeled at upper left.)
Gray's	subject #234 1067

In human anatomy, the eponychium [Greek epi (on, upon) + onychion (little claw)], also known as the cuticle, is the thickened layer of skin surrounding fingernails and toenails. Beneath the cuticle is a thin layer of a membrane known as the pterygium. The function is to protect the area between the nail and epidermis from exposure to harmful bacteria. The vascularization pattern is similar to that of perionychium.^[1]

Similarly, in hoofed animals, the eponychium is the deciduous hoof capsule in fetuses and newborn foals, and is a part of the permanent hoof in older animals.^[2]

References

1. ^ Sangiorgi S, Manelli A, Congiu T, et al. (2004). "Microvascularization of the human digit as studied by corrosion casting". J. Anat. 204 (2): 123–31. doi:10.1111/j.1469-7580.2004.00251.x. PMC 1571248. PMID 15032919. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1571248. 
2. ^ Bragulla, H. (Mar 1991). "The deciduous hoof capsule (Capsula ungulae decidua) of the equine fetus and newborn foal". Anat Histol Embryol. 20 (1): 66–74. PMID 1877762. 

This anatomy article is a stub. You can help Wikipedia by expanding it.v · Categories: Nail anatomy Anatomy stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем решить контрольную работу Amadocus I Cottage (disambiguation) Look at other dictionaries: Eponychium — l Eponychium en (4) L éponychium est la cuticule de peau à la base de l ongle …   Wikipédia en Français Éponychium — l Eponychium en (4) L éponychium est la cuticule de peau à la base de l ongle …   Wikipédia en Français Eponychium — antnagis statusas T sritis histologija atitikmenys: lot. Eponychium ryšiai: platesnis terminas – nagas …   Medicininės histologijos ir embriologijos vardynas Eponychium — antnagė statusas T sritis embriologija atitikmenys: lot. Eponychium ryšiai: platesnis terminas – ektoderma …   Medicininės histologijos ir embriologijos vardynas Eponychium unguiculae — antnagė statusas T sritis gyvūnų raida, augimas, ontogenezė, embriologija atitikmenys: lot. Eponychium unguiculae; Eponychium ungulae ryšiai: platesnis terminas – nagas …   Veterinarinės anatomijos, histologijos ir embriologijos terminai Eponychium ungulae — antnagė statusas T sritis gyvūnų raida, augimas, ontogenezė, embriologija atitikmenys: lot. Eponychium unguiculae; Eponychium ungulae ryšiai: platesnis terminas – nagas …   Veterinarinės anatomijos, histologijos ir embriologijos terminai eponychium — /ep euh nik ee euhm/, n., pl. eponychia / nik ee euh/ 1. Embryol. the modified outer layer of the epidermis that partially covers the fetal fingernails and toenails and that persists after birth as the cuticle. 2. Anat. a thin, cuticular fold… …   Universalium eponychium — noun cuticle (thickened layer of skin on fingernails and toenails) …   Wiktionary eponychium — 1. The thin, condensed, eleidin rich layer of epidermis that precedes and initially covers the nail plate in the embryo. It normally degenerates by the eighth month except at the nail base where it remains as the cuticle of the nail. 2. [NA] The… …   Medical dictionary Eponychium — Ep|ony̲|chium [zu ↑epi... u. gr. ὀνυξ, Gen.: ὀνυχος = Nagel] s; s, ...ien [...ien] u. ...ia: die auf der Nagelwurzel liegende Hautschicht …   Das Wörterbuch medizinischer Fachausdrücke 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”