<\/span><\/h2>\nFingerprints are the pattern of epidermal<\/span> ridges on the fingers. They consist of friction ridge units that can be characterized by patterns (ridge arrangement) and minutiae (small specific details such as bifurcations and ridge terminations).<\/p>\n\n<\/span>Examples of fingerprint patterns.<\/span><\/h5>\n<\/section>\n\n\n
\n
\n<\/div>\n
Tie<\/p>\n
\n
\n<\/div>\n
Tent arch<\/p>\n
\n
\n<\/div>\n
Turn<\/p>\n
\n
\n<\/div>\n
Double circuit<\/p>\n<\/p><\/div>\n<\/section>\n
<\/div>\n
\n<\/span>Examples of minutiae<\/span><\/h5>\n<\/section>\n\n\n
\n
\n<\/div>\n
End of the ridge<\/p>\n
\n
\n<\/div>\n
Point<\/p>\n
\n
\n<\/div>\n
Fork<\/p>\n
\n
\n<\/div>\n
Island<\/p>\n
\n
\n<\/div>\n
Hook<\/p>\n
\n
\n<\/div>\n
Double bifurcation<\/p>\n
\n
\n<\/div>\n
Enclosure<\/p>\n
\n
\n<\/div>\n
Bridge<\/p>\n
\n
\n<\/div>\n
Trifurcation<\/p>\n<\/p><\/div>\n<\/section>\n
<\/div>\n
<\/span>How do fingerprints arise?<\/span><\/h2>\nFingerprints develop during early fetal life. They undergo several phases, of which crucial events occur in the first weeks of the second trimester.<\/p>\n
<\/span>0\u20133 weeks<\/span><\/h3>\n\n- Egg fertilization initiates embryonic development<\/li>\n
- Gastrulation: the first ball of cells is rearranged into three primary<\/span> fabrics<\/li>\n
- Ectoderm - forms the epidermis<\/span>including the friction ridge skin<\/li>\n
- Mesoderm - forms connective tissue<\/span> of dermis<\/span>\n<\/li>\n
- Endoderm: forms other major organ systems, including the gastrointestinal tract, the respiratory tract, the urinary tract<\/li>\n<\/ul>\n
<\/span>4\u20138 weeks<\/span><\/h3>\n\n- Morphogenesis (form)<\/li>\n
- The limbs develop rapidly from about 4 weeks: arms, legs, knees, elbows, fingers, toes seen at about 8 weeks.<\/li>\n
- At 7\u20138 weeks fly<\/span><\/span> the pads begin to form from the mesoderm<\/li>\n<\/ul>\n
<\/span>9-16 weeks<\/span><\/h3>\n\n- The less prominent flying pads then disappear; friction ridge units develop<\/li>\n
- The vocal skin is layered epidermis on top of the shapeless fibrous dermis<\/li>\n
- \nBasal<\/span> cap<\/span> becomes more prominent and folds epidermis into dermis (primary ridges)<\/li>\n<\/ul>\n
<\/span>Second trimester<\/span><\/h3>\n\n- Fly Pad regression<\/span> and the development of the friction ridge continues; permanent minutiae are established for week 16.<\/li>\n
- Sweat and epidermal glandsdermal<\/span> The ridge system continues to mature and expand.<\/li>\n
- At the end of the second trimester, sweat ducts and pores appear along the epidermal ridges.<\/li>\n<\/ul>\n
<\/span>Third trimester<\/span><\/h3>\n\n- The fetus continues to gain weight.<\/li>\n<\/ul>\n
\n
\n
\n
\n<\/div><\/div><\/div><\/div>\n
<\/span>What are the theories of friction ridge development?<\/span><\/h2>\nThere are two main theories that aim to explain the processes underlying the formation of friction ridges.<\/p>\n
<\/span>Theory of mechanical instability.<\/span><\/h3>\nThe theory of mechanical instability considers the formation of ridges as a consequence of a buckling process. The ridges are formed perpendicular to the lines of greatest tension.<\/p>\n
\n- Differential growth of cellular<\/span> The layers of the skin create resistive limit forces, which cause a compression effect.<\/li>\n
- The nervous system is also involved in this process.<\/li>\n
- Once the interaction of forces is large enough, buckling instability occurs and more cells proliferation<\/span> You can increase the depth.<\/li>\n<\/ul>\n
<\/span>Neuroectoderm theory<\/span><\/h3>\nNeuroectoderm theory describes an interdependent relationship between neurological <\/span>map and pattern of primary ridges.<\/p>\n\n- The ridges are established on a grid of sensory nerve tissue. The mapping of the volar pad precedes the formation of the ridge.<\/li>\n
- Specialized cells like Merkel cells<\/span>, certain basal cells and Meissner corpuscles are involved.<\/li>\n
- Results in the formation of primary and secondary crest with anastomosis.<\/li>\n<\/ul>\n
<\/span>Clinical relevance of the loss of fingerprints.<\/span><\/h2>\nFriction ridges can become thicker and shorter with aging, and are more difficult to discern.<\/p>\n
Loss of fingerprints is sometimes seen in various skin conditions. These include trauma<\/span>, benign<\/span> and evil one<\/span> skin lesions, infections and inflammatory<\/span> skin conditions<\/p>\n<\/span>Infections<\/span><\/h3>\n\n- \nBacterial<\/span> infection<\/span> how pyoderma<\/span>\n<\/li>\n
- Boneless keratolysis<\/li>\n
- Leprosy<\/li>\n
- Scabies<\/li>\n
- Tinea manuum<\/li>\n
- Herpes Simplex<\/li>\n
- Viral warts<\/li>\n<\/ul>\n
<\/span>Inflammatory diseases<\/span><\/h3>\n\n- \n
Hand dermatitis<\/span> including exfoliative keratolysis and pompholyx\n<\/li>\n- Psoriasis<\/li>\n
- Acanthosis<\/span> nigricans<\/li>\n
- Systemic<\/span> sclerosis<\/span><\/li>\n
- Raynaud's phenomenon<\/span><\/li>\n
- Systemic lupus erythematosus<\/li>\n
- Epidermolysis bullosa<\/li>\n
- Lichen planus<\/li>\n
- Pyogenic<\/span> granuloma<\/span><\/li>\n
- Erythema<\/span> multiform<\/li>\n<\/ul>\n
<\/span>Other<\/span><\/h3>\n\n- Drug rashes<\/span><\/li>\n
- Artifact dermatitis<\/li>\n
- Chemotherapy<\/span>hand-foot induced syndrome<\/span><\/li>\n<\/ul>\n
These skin pathologies can cause interruptions in the papillary lines, altering the depth and inclination of the ridges and valleys. This may affect the analysis of modern biometric pattern recognition systems. This can interfere with the reliability of personal identification methods or "fingerprints."<\/p>\n
Most cases of fingerprint damage are reversible, since pathology<\/span> It is relatively superficial. However, permanent scarring can occur with deep injuries.<\/p>\n\n<\/span>Loss of fingerprints due to dermatitis.<\/span><\/h5>\n<\/section>\n\n\n
\n
\n<\/div>\n
Reduced fingerprint due to dermatitis<\/p>\n<\/p><\/div>\n<\/section>\n
<\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"
\u00bfQu\u00e9 son las huellas digitales? Las huellas digitales son el patr\u00f3n de la epid\u00e9rmico crestas en los dedos. Consisten en unidades de cresta de fricci\u00f3n que se pueden caracterizar por…<\/p>","protected":false},"author":8,"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"categories":[204],"tags":[],"class_list":["post-7907","wiki","type-wiki","status-publish","format-standard","category-glosario-definiciones"],"_links":{"self":[{"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/wiki\/7907","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/types\/wiki"}],"author":[{"embeddable":true,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/comments?post=7907"}],"version-history":[{"count":0,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/wiki\/7907\/revisions"}],"wp:attachment":[{"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/media?parent=7907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/categories?post=7907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/tags?post=7907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}