- Eponychium
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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
- ^ 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.
- ^ 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.
Integumentary system (TA A16, TH H3.12, GA 10.1062) Skin Basement membrane zoneSkin fieldsHeadcampus frontalis, campus parietalis, campus occipitalis, campus temroralis, campus facialis (campus orbitalis, campus nasalis, campus oralis, campus mentalis, campus infraorbitalis, campus buccalis, campus zygomaticus)Neckcampus cervicalis anterior (campus submandibularis, campus caroticus, campus omotrachealis, campus submentalis), campus sternocleidomastoideus, campus cervicalis posterior (campus omoclavicularis), campus nuchalisChestcampus presternalis, campus clavipectoralis, campus pectoralis verus, campus mammarius, campus inframammarius, campus axillarisAbdomencampus hypochondriacus, campus epigastricus, campus abdominalis lateralis, campus umbilicalis, campus inguinalis, campus hypogastricusPerineumcampus analis, campus urogenitalisSubcutaneous tissue Panniculus/Pannus (Panniculus adiposus · Panniculus carnosus) · Stratum membranosum · Loose connective tissue · Superficial fasciaAdnexa Skin glandsSweat glands: Apocrine sweat gland · Eccrine sweat gland
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