후각

사람의 후각 계통. 1: 후각신경구 2: 승모 세포 3: 4: 콧구멍 상피 5: 사구체 6: 후각 수용 세포
카네이션 냄새를 맡고있는 한 여성의 그림

후각(嗅覺)은 냄새를 맡을 수 있는 감각으로, 정확히는 공기 중의 화학 물질들을 감지하는 것을 말한다. 코로 맡을 수 있는 온갖 기운을 냄새 또는 내음이라고 한다. 먹을 수 있는 음식, 위험 요소, 페로몬 등을 감지하는 데 활용되며, 을 느끼는 데에도 중요한 역할을 한다.

후각은 일반적으로 화학 물질의 분자가 후각 세포를 자극하여 일어나는 감각으로, 곤충류와 척추동물에서 특히 발달되어 있다. 육상 척추동물의 후각기는 코로서, 기체 상태의 화학 물질이 흡기와 함께 콧속으로 들어오면, 후각 상피의 점액에 녹은 후 후세포를 자극하여 흥분을 일으킨다. 이 흥분이 후신경을 통해 대뇌에 전해져 후각을 느끼게 된다. 무척추동물 중 곤충류는 일반적으로 척추동물보다 후각이 예민하다. 많은 곤충류는 더듬이에 있는 무수한 감각털의 끝에 냄새를 맡는 부위가 있다.[1]

인간의 경우, 냄새 분자가 비강에 있는 수용체와 결합하여 발생한 신호가 후각계를 통해 전달된다.[2] 후각 수용체에 결합할 수 있는 분자들은 주로 휘발성 분자들이다. 이 신호는 사구체(glomeruli)에서 수용체의 신호를 모아 중추신경계의 일부인 후각망울(olfactory bulb)로 전달되며, 여기서 후각 정보는 냄새 식별, 기억, 감정을 담당하는 뇌의 부분들과 상호 작용하기 시작한다.[3]

코나 후각 수용체의 손상, 후각상실증(anosmia), 상기도 감염, 외상성 뇌 손상, 퇴행성 질환등으로 후각에 문제가 발생할 수 있다.[4]

관련 질병

다음은 후각과 관련한 질병이다.[5]

같이 보기

각주

  1. 글로벌 세계대백과사전》, 〈후각〉
  2. de March, CA; Ryu, SE; Sicard, G; Moon, C; Golebiowski, J (2015). “Structure–odour relationships reviewed in the postgenomic era”. 《Flavour and Fragrance Journal》 30 (5): 342–361. doi:10.1002/ffj.3249. 
  3. Schacter, D; Gilbert, D; Wegner, D (2011). 〈Sensation and Perception〉. 《Psychology》. Worth Publishers. 166–171쪽. ISBN 978-1-4292-3719-2. 
  4. Xydakis, MS; Belluscio, L (2017). “Detection of neurodegenerative disease using olfaction”. 《The Lancet Neurology》 16 (6): 415–416. doi:10.1016/S1474-4422(17)30125-4. PMID 28504103. S2CID 5121325. 2021년 12월 1일에 원본 문서에서 보존된 문서. 2019년 10월 10일에 확인함. 
  5. Hirsch, Alan R. (2003) Life's a Smelling Success
  6. Gilbert, Avery (2008). 〈Freaks, Geeks, and Prodigies〉. 《What the Nose Knows》. Crown Publishers. 52쪽. ISBN 978-1-4000-8234-6. 

Read other articles:

Cherish & RuellePoster rilis promosionalSutradaraAzhar Kinoi LubisProduserSentot SahidDitulis oleh Reiga Sanskara Richard Oh BerdasarkanCherish & Ruelleoleh Reiga SanskaraPemeran Beby Tsabina Febby Rastanty Pangeran Lantang SinematograferMemet NakesPenyuntingFebby GozalPerusahaanproduksi KlikFilm Productions Merpati Film DistributorKlikFilmTanggal rilis 10 Februari 2023 (2023-02-10) Durasi72 menitNegaraIndonesiaBahasaIndonesia Cherish & Ruelle adalah film drama cerita seru In...

 

Spektrometer adalah alat untuk mengukur spektrum cahaya. Spektrometer, spektrograf atau Spektroskop Diagram skema dari alat spektrometer Dalam astronomi dan beberapa cabang ilmu fisika dan kimia, spektrometer adalah sebuah alat optik untuk menghasilkan garis spektrum cahaya dan mengukur panjang gelombang serta intensitasnya. Prisma yang berada di tengah spektrometer berfungsi untuk menyebarkan cahaya. Cahaya putih tersebar pada masing-masing panjang gelombang, dan menghasilkan spektrum pelang...

 

Women's 30 kilometre freestyleat the XVI Olympic Winter GamesVenueLes SaisiesDates21 FebruaryCompetitors57 from 19 nationsWinning time1:22:30.1Medalists Stefania Belmondo Italy Lyubov Yegorova Unified Team Yelena Välbe Unified Team← 19881994 → Cross-country skiing at the1992 Winter Olympics5 kmwomen10 kmmenPursuitmenwomen15 kmwomen30 kmmenwomen50 kmmenRelaymenwomenvte The women's 30 kilometre freestyle cross-country skiing competition at the 199...

Australian politician For the Welsh footballer, see David Hamer (footballer). David HamerAM, DSCMember of the Australian Parliamentfor IsaacsIn office25 October 1969 – 18 May 1974Preceded byNew seatSucceeded byGareth ClaytonIn office13 December 1975 – 10 November 1977Preceded byGareth ClaytonSucceeded byBill BurnsSenator for VictoriaIn office1 July 1978 – 30 June 1990 Personal detailsBorn(1923-09-05)5 September 1923Melbourne, VictoriaDied14 January 200...

 

Not to be confused with the Swiss mining company Solway Group. Belgian chemical company This article is about the company named Solvay S.A. or Solvay Group. For other uses, see Solvay. Solvay NV/SACompany typePublicTraded asEuronext Brussels: SOLB BEL 20 componentCAC Next 20 componentISINBE0003470755 IndustryChemicalsFounded1863; 161 years ago (1863)FounderAlfred and Ernest SolvayHeadquartersNeder-Over-Heembeek, Brussels, BelgiumKey peopleNicolas Boël (Chairman), ...

 

Robert ChartoffLahirRobert Irwin Chartoff[1](1933-08-26)26 Agustus 1933New York City, New York, ASMeninggal10 Juni 2015(2015-06-10) (umur 81)Santa Monica, California, ASKebangsaanAmerika SerikatPendidikanB.A. Union College J.D. Columbia University Law SchoolPekerjaanProduser FilmTahun aktif1967–2015Suami/istriPhyllis Raphael (bercerai) Vanessa Howard (1970-1983; bercerai) Jenny Weyman (1992-2015; kematiannya)Anakdengan Raphael: --Jenifer Chartoff --William Chartoff --Juli...

Peta Provinsi Papua Tengah di Indonesia Berikut adalah daftar distrik/kecamatan dan kelurahan di Provinsi Papua Tengah, Indonesia. Provinsi Papua Tengah terdiri dari 8 kabupaten, 130 distrik, 36 kelurahan, dan 1.172 kampung. Pada tahun 2017, jumlah penduduknya diperkirakan mencapai 1.177.902 jiwa dengan total luas wilayah 61.012,18 km².[1][2] No. Kode Kemendagri Kabupaten/Kota Ibukota Luas Wilayah (km2) Penduduk (jiwa) 2017 Distrik Kelurahan Kampung 1 91.28 Kab. Deiyai Tigi 5...

 

Pour les articles homonymes, voir Abraham (patronyme). Karl AbrahamBiographieNaissance 3 mai 1877BrêmeDécès 25 décembre 1925 (à 48 ans)BerlinSépulture Cimetière de Lichterfelde (d)Nationalité allemandeFormation Université de WurtzbourgUniversité Humboldt de BerlinActivités Psychiatre, historien de l’art, philosophe, psychanalyste, scénaristeAutres informationsMembre de Société allemande de psychanalysePlaque commémorativeVue de la sépulture.modifier - modifier le code ...

 

Political party in Denmark The Alternative AlternativetAbbreviationALT Å [a]LeaderFranciska RosenkildeFoundersUffe ElbækJosephine FockFounded27 November 2013Split fromDanish Social Liberal PartyYouth wingAlternativets UngeMembership (2022) 1,331[1]IdeologyGreen politics[2]Political positionCentre-left[3] to left-wing[4]European affiliationDiEM25[5]European Spring[6]Nordic affiliationNordic Green Left AllianceColours ...

Les 81 provinces de la Turquie, comparées aux 7 régions géographiques traditionnelles. Les provinces de Turquie (iller), au nombre de 81, sont généralement regroupées sur les 7 régions géographiques traditionnelles (coğrafi bölgeler) qui les recouvrent principalement. Régions géographiques traditionnelles Région égéenne (Ege Bölgesi) Région de la mer Noire (Karadeniz Bölgesi) Région de l'Anatolie centrale (İç Anadolu Bölgesi) Région de l'Anatolie orientale (Doğu Anadol...

 

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)&#...

 

Italian ocean liner later converted to troopship and later hospital ship Saturnia as Italian troop ship passing through Suez Canal, Sept. 1935. History NameSaturnia Owner Cosulich Soc. Triestina di Nav., Trieste (1925—1932) Italia Flotte Riunite (1932—1937) Società Anonima di Navigazione Italia (1937—1943) Operator Cosulich Soc. Triestina di Nav., Trieste (1925—1932) Italia Flotte Riunite (1932—1937) Società Anonima di Navigazione Italia (1937—1943) Port of registryTrieste, Ital...

  لمعانٍ أخرى، طالع الحرب الأهلية اليمنية (توضيح). هذه المقالة طويلة جداً وصعبة التصفح. فضلاً ساهم في تطويرها من خلال تجزئتها إلى مقالات فرعية مفصَّلة، ثُمَّ اكتفِ بمُلخَّص مُختصر عن كل مقالة فرعية. (أغسطس 2018) الحرب الأهلية اليمنية جزء من ما بعد انقلاب 2014 في اليمن والأز�...

 

Time Out magazineBerkas:Time Out logo.jpgKepala penyunting, LondonCaroline McGinnPenyunting LondonGail TolleyPenyunting, New YorkJillian AnthonyFrekuensiMingguan, bulanan dan dasa-bulanFormatBudaya, hiburan dan paduan peristiwaSirkulasi6.5 jutaPendiriTony ElliottDidirikan1968; 56 tahun lalu (1968)PerusahaanTime Out Group Ltd.NegaraBritania RayaBerpusat diLondon, InggrisBahasaInggris, multi-bahasaSitus webwww.timeout.com Time Out adalah majalah perjalanan Inggris yang diterbitkan oleh Tim...

 

College ice hockey season 2019–20 Yale Bulldogs men's ice hockey seasonConference7th ECAC HockeyHome iceIngalls RinkRankingsUSCHONRUSA TodayNRRecordOverall15–15–2Conference10–10–2Home9–6–0Road5–8–2Neutral1–2–0Coaches and captainsHead coachKeith AllainAssistant coachesJosh SiembidaRyan DonaldCaptain(s)Evan SmithYale Bulldogs men's ice hockey seasons« 2018–19 2020–21 » The 2019–20 Yale Bulldogs Men's ice hockey season was the 125th season of play for t...

1990 American comedy horror film FrankenhookerTheatrical release posterDirected byFrank HenenlotterWritten by Robert Bob Martin Frank Henenlotter Produced byJames GlickenhausStarring James Lorinz Patty Mullen Louise Lasser CinematographyRobert M. BaldwinEdited byKevin TentMusic byJoe RenzettiProductioncompanyLevins-HenenlotterDistributed byShapiro-Glickenhaus EntertainmentRelease dates April 1990 (1990-04) (Houston) June 1, 1990 (1990-06-01) Running time84 minutes...

 

Constitutional monarchy as a system of government in Grenada King of GrenadaCoat of Arms of GrenadaIncumbentCharles IIIsince 8 September 2022 DetailsStyleHis MajestyHeir apparentWilliam, Prince of WalesFirst monarchElizabeth IIFormation7 February 1974 Politics of Grenada Executive Monarch (list) King Charles III Governor-General (list) Dame Cécile La Grenade Prime Minister Dickon Mitchell Legislative Parliament Senate President House of Representatives Speaker Leader of the Opposit...

 

United States historic placeNorthern Pacific Railway Company Como Shops Historic DistrictU.S. National Register of Historic PlacesU.S. Historic district Bandana Square: steam locomotive and water tower enhancing the railroad themeShow map of MinnesotaShow map of the United StatesLocationEnergy Park Dr. and Bandana Blvd.Saint Paul, MinnesotaCoordinates44°58′18″N 93°9′11″W / 44.97167°N 93.15306°W / 44.97167; -93.15306Built1885NRHP reference No.8300...

Mathematical transform that expresses a function of time as a function of frequency Fourier transforms Fourier transform Fourier series Discrete-time Fourier transform Discrete Fourier transform Discrete Fourier transform over a ring Fourier transform on finite groups Fourier analysis Related transforms An example application of the Fourier transform is determining the constituent pitches in a musical waveform. This image is the result of applying a constant-Q transform (a Fourier-related tra...

 

Jon Amiel Jon Amiel (Londra, 20 maggio 1948) è un regista e produttore televisivo britannico. Indice 1 Biografia 2 Filmografia 2.1 Regista 2.1.1 Cinema 2.1.2 Televisione 2.2 Produttore 3 Altri progetti 4 Collegamenti esterni Biografia Dopo essersi laureato in Letteratura inglese all'Università di Cambridge, inizia una collaborazione con la Royal Shakespeare Company. In seguito lavora per la BBC, dove dirige alcuni documentari e varie produzioni televisive. Il suo debutto cinematografico die...