Agenesia

Le informazioni riportate non sono consigli medici e potrebbero non essere accurate. I contenuti hanno solo fine illustrativo e non sostituiscono il parere medico: leggi le avvertenze.

Agenesia, dal greco a (privo) gènesis (nascita), è un termine usato in medicina per indicare l'assenza di un organo. Il mancato sviluppo di un organo viene invece definito aplasia.

Eziologia

L'agenesia di un organo è la conseguenza della mancata comparsa dell'abbozzo corrispondente durante lo sviluppo embrionale.

Molti tipi di agenesia sono incompatibili con la vita, come l'agenesia del cervello, che viene definita anencefalia, mentre l'assenza di altre strutture come il corpo calloso dà origine a problemi di minore entità. Sono relativamente frequenti l'agenesia renale, l'agenesia ovarica, ad esempio nella sindrome di Turner, l'agenesia della tiroide e le agenesie dentali.

L'agenesia di un arto viene definita amelìa, mentre il difetto di sviluppo di una parte dell'arto è detta meromelìa. La focomelìa è invece la presenza regolare di mani e piedi associata all'assenza o all'incompleto sviluppo del braccio o della gamba.

Le agenesie, al contrario delle aplasie, sono in genere sempre legate a difetti dello sviluppo embrionale, dovuti ad alterazioni cromosomiche o a esposizione nel corso della gravidanza ad agenti chimici, a farmaci, a virus o a radiazioni ionizzanti.

Bibliografia

  • Douglas M. Anderson, A. Elliot Michelle, Mosby’s medical, nursing, & Allied Health Dictionary sesta edizione, New York, Piccin, 2004, ISBN 88-299-1716-8.

Altri progetti

Collegamenti esterni

  Portale Medicina: accedi alle voci di Wikipedia che trattano di medicina

Read other articles:

Josef Hušbauer

Josef Hušbauer Hušbauer bersama timnas Ceko pada 2019Informasi pribadiNama lengkap Josef HušbauerTanggal lahir 16 Maret 1990 (umur 33)Tempat lahir Hradištko, CekoslowakiaTinggi 1,82 m (6 ft 0 in)Posisi bermain GelandangInformasi klubKlub saat ini PříbramNomor 6Karier junior1996–2007 Sparta Prague2007–2008 JihlavaKarier senior*Tahun Tim Tampil (Gol)2008 Jihlava 8 (0)2008–2010 Viktoria Žižkov 23 (0)2009–2010 → Příbram (pinjaman) 22 (4)2010–2011 Baník ...

 

Ipuh

Ipuh Ipuh, Antiaris toxicariadari Serengkah Kiri, Tumbang Titi, Ketapang Klasifikasi ilmiah Kerajaan: Plantae (tanpa takson): Angiospermae (tanpa takson): Eudikotil (tanpa takson): Rosidae Ordo: Rosales Famili: Moraceae Tribus: Castilleae Genus: AntiarisLesch. Spesies: A. toxicaria Nama binomial Antiaris toxicariaLesch.[1] Sinonim Antiaris africana Engl. Antiaris macrophylla R. Br. Antiaris welwitschii Engl. Untuk arti yang lain, lihat Ipuh (disambiguasi). Lihat pula: Kota Ipoh ...

 

Фотокатод

Фотокато́д — отрицательно заряженный электрод (катод) в светочувствительных устройствах, работающих с использованием внешнего фотоэффекта (в частности, в фотоумножителях, фотоэлементах, диссекторах, суперортиконах, фотоэмиссионных рентгеновских трубках, электрон�...

Sosialisme liberal

Artikel ini bukan mengenai Liberalisme sosial atau Sosialisme libertarian. Bagian dari seriSosialisme Perkembangan Sejarah sosialisme Perdebatan kalkulasi sosialis Ekonomi sosialis Gagasan Penghitungan dalam barang Kepemilikan kolektif Koperasi Kepemilikan bersama Demokrasi ekonomi Perencanaan ekonomi Kesetaraan kesempatan Asosiasi bebas Demokrasi industri Model masukan-keluaran Internasionalisme Kupon kerja Keseimbangan material Ekonomi sejawat ke sejawat(Ekonomi berbagi) Produksi untuk peng...

 

Heidelberg

Heidelberg Heidelberg, dengan Istana Heidelberg terletak di bukit dan Old Bridge diatas Sungai Neckar Lambang kebesaranLetak Heidelberg NegaraJermanNegara bagianBaden-WürttembergWilayahKarlsruheKreisStadtkreisPemerintahan • Lord MayorDr. Eckart Würzner (Ind.)Luas • Total108,83 km2 (4,202 sq mi)Ketinggian114 m (374 ft)Populasi (2021-12-31)[1] • Total159.245 • Kepadatan15/km2 (38/sq mi)Zona waktuWET/WMP...

 

Ulmus minor 'Pendula'

Elm cultivar Ulmus minor 'Pendula'Ulmus minor 'Pendula', Snouck van Loosenpark, Enkhuizen (2006)SpeciesUlmus minorCultivar'Pendula'OriginBelgium The Field Elm cultivar Ulmus minor 'Pendula' was said to have been raised in Belgium in 1863.[1] It was listed as Ulmus sativa pendula by C. de Vos in 1887,[2] and by Boom in 1959 as a cultivar.[3] Herbarium specimens confirm that more than one field elm clone has been distributed as 'Pendula'. Henry (1913) distinguished the t...

ناتالي كوك

ناتالي كوك   معلومات شخصية اسم الولادة (بالإنجليزية: Natalie Louise Cook)‏  الميلاد 19 يناير 1975 (49 سنة)  تاونسفيل  الطول 181 سنتيمتر  الجنسية أستراليا  الوزن 73 كيلوغرام  الحياة العملية المهنة لاعبة كرة طائرة،  ولاعبة كرة طائرة شاطئية  الرياضة الكرة الطائرة الشاط�...

 

Canadian cuisine

Culinary traditions of Canada This article contains too many charts, tables, or data. Please help cleaning them up or elaborating them with prose text. (July 2023) (Learn how and when to remove this message) Part of a series onCanadian cuisine Regional cuisines Pacific Northwest Rocky Mountain Toronto Québec Maritime Indigenous Beverages Beer Québec spruce Bog Labrador tea Caesar Caribou Moose milk Ice cider Newfoundland Screech Whisky Yukon Jack Wine British Columbia Ontario Prince Edward ...

 

Diljit Rana, Baron Rana

British peer (born 1938) The Right HonourableThe Lord RanaOBERana in 2020Member of the House of LordsLord TemporalIncumbentAssumed office 16 June 2004Life peerage Personal detailsBorn (1938-09-20) 20 September 1938 (age 85)Sanghol, Punjab, IndiaPolitical partyConservative Diljit Singh Rana, Baron Rana OBE (born 20 September 1938) is a British businessman and member of the House of Lords. Having originally been a crossbencher, he took the Conservative whip in 2016. He was married to S...

Tataouine

City in Tataouine Governorate, Tunisia For the fictional planet, see Tatooine. Place in Tataouine Governorate, TunisiaTataouine Tiṭṭawin (Berber languages)تطاوين (Arabic)Tataouine by nightTataouineLocation in TunisiaCoordinates: 32°55′50″N 10°27′00″E / 32.93056°N 10.45000°E / 32.93056; 10.45000Country TunisiaGovernorateTataouine GovernorateDelegation(s)Tataouine North, Tataouine SouthGovernment • MayorBoubaker Souid (Ennahda)...

 

Baluse

Traditional shield of Indonesia Baluse A Baluse shield, pre-1942.TypeShieldPlace of originNias, IndonesiaService historyUsed byNias peopleSpecificationsWidth27 cm (11 in)Height120 cm (47 in) Baluse or Baloese is a traditional shield of the Nias people originating from Nias, an island off the west coast of North Sumatra, Indonesia. Baluse in the Northern Nias is somewhat smaller than those of the rest of the island.[1] Description The shield is made o...

 

2020年夏季奧林匹克運動會波蘭代表團

2020年夏季奥林匹克运动会波兰代表團波兰国旗IOC編碼POLNOC波蘭奧林匹克委員會網站olimpijski.pl（英文）（波兰文）2020年夏季奥林匹克运动会（東京）2021年7月23日至8月8日（受2019冠状病毒病疫情影响推迟，但仍保留原定名称）運動員206參賽項目24个大项旗手开幕式：帕维尔·科热尼奥夫斯基（游泳）和马娅·沃什乔夫斯卡（自行车）[1]闭幕式：卡罗利娜·纳亚（皮划艇）&#...

Magic realism

Style of literary fiction and art Magic realism or magical realism is a style or genre of fiction and art that presents a realistic view of the world while incorporating magical elements, often blurring the lines between fantasy and reality.[1] Magic realism often refers to literature in particular, with magical or supernatural phenomena presented in an otherwise real-world or mundane setting, commonly found in novels and dramatic performances.[2]: 1–5  In hi...

 

Foire du Lendit

Foire du Lendit La plaine du Lendit, entre Paris et Saint-Denis. Pays France Emplacement Rue du Landy (Seine-Saint-Denis) Coordonnées 48° 54′ 56″ nord, 2° 21′ 28″ est Géolocalisation sur la carte : Île-de-France Géolocalisation sur la carte : Paris et de la petite couronne Géolocalisation sur la carte : Seine-Saint-Denis Type Foire modifier  La foire du Lendit (ou foire du Landy), ouvrait pour deux semaines tous les 11 juin, jo...

 

Chinese Nicaraguans

Ethnic group Ethnic group Chinese NicaraguansTotal population14,000[1]Regions with significant populationsBluefields, Puerto Cabezas, ManaguaLanguagesSpanish, Mandarin, Cantonese, Hokkien, othersReligionBuddhism and ChristianityRelated ethnic groupsChinese Cubans, Overseas Chinese Chinese Nicaraguans (simplified Chinese: 尼加拉瓜华人; traditional Chinese: 尼加拉瓜華人; pinyin: Níjiālāguā huá rén; Spanish: Sino-nicaragüenses) are Nicaraguans of Chinese an...

Reformed Presbyterian Church of Ireland

Presbyterian church in Ireland with 43 congregations Reformed Presbyterian Church of IrelandThe Blue BannerClassificationProtestantOrientationCalvinismPolityPresbyterianRegionIrelandMembers1,800 per 2023 synod reports. The Reformed Presbyterian Church of Ireland is a Presbyterian church in Ireland. The church currently has forty-three congregations, of which thirty-five are located in Northern Ireland; the remaining eight are located in the Republic of Ireland.[1] As of 2011, its tot...

 

Type 63 (semovente)

Questa voce o sezione sull'argomento veicoli militari non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Segui i suggerimenti del progetto di riferimento. Tipo 63DescrizioneEquipaggio6 Dimensioni e pesoLunghezza6,432 (scafo) m Altezza3 m Peso32 t Propulsione e tecnicaMotorediesel 12 cilindri a V Potenza500 hp Rapporto peso/potenza18,1 TrazioneCingoli S...

 

Jalan Wiratno (Tanjungpinang)

Jalan Wiratno adalah salah satu jalan raya utama di Tanjungpinang. Jalan Wiratno merupakan perbatasan antara 2 kecamatan, yaitu Bukit Bestari, Tanjungpinang dan Tanjungpinang Barat, Tanjungpinang. Jalan ini membentang dari bunderan Tugu Pemuda hingga ke Jembatan Wiratno. Bangunan di sepanjang Jalan Wiratno Barat Timur Family Spa Rumah Makan Bundo Kanduang Bank BNI Mall Ramayana Tanjung Pinang Hotel Kaputra Asuransi Bumiputera Kantor Dekranasda Kepulauan Riau Lapangan Gasing Cempedak Komplek P...

Taunus

Mountain range in Germany For other uses, see Taunus (disambiguation). TaunusHochtaunus with Großer Feldberg as its highest pointHighest pointPeakGroßer Feldberg (Hochtaunus)Elevation878 m (2,881 ft)Coordinates50°14′N 08°27′E / 50.233°N 8.450°E / 50.233; 8.450DimensionsLength75 km (47 mi) NE/SWWidth35 km (22 mi) NW/SEArea2,700 km2 (1,000 sq mi)Geography CountryGermanyRegionHesseParent rangeRhenish Slat...

 

東ティモール紛争

東ティモール紛争 多国籍軍の兵士達 戦争：東ティモール紛争 年月日：1999年4月 〜 2005年 場所：ティモール島東部及びその周辺 結果：東ティモールの独立。 交戦勢力 インドネシア 東ティモール オーストラリア ニュージーランド 指導者・指揮官 ウィラント ジョン・ハワード ピーター・コスグローブ ジェニー・シップリー ヘレン・クラーク 戦力 不詳 不詳 損害 19人...