Seminiferous tubule

Seminiferous tubule
Seminiferous tubule in cross-section (large tubular structure – center of image) with sperm (black, tiny, ovoid bodies furthest from the outer edge of the tubular structure). H&E stain.
1: Testicular septa
2: Convoluted seminiferous tubules
3: Testicular lobules
4: Straight seminiferous tubules
5: Efferent ductules
6: Rete testis
Details
Identifiers
Latintubuli seminiferi
MeSHD012671
TA98A09.3.01.022
TA23599
FMA19825
Anatomical terminology

Seminiferous tubules are located within the testicles, and are the specific location of meiosis, and the subsequent creation of male gametes, namely spermatozoa.

Structure

The epithelium of the tubule consists of a type of sustentacular cells known as Sertoli cells, which are tall, columnar type cells that line the tubule.

In between the Sertoli cells are spermatogenic cells, which differentiate through meiosis to sperm cells. Sertoli cells function to nourish the developing sperm cells. They secrete androgen-binding protein, a binding protein which increases the concentration of testosterone.

There are two types: convoluted and straight, convoluted toward the lateral side, and straight as the tubule comes medially to form ducts that will exit the testis.

The seminiferous tubules are formed from the testis cords that develop from the primitive gonadal cords, formed from the gonadal ridge.

Function

Main article: Spermatogenesis

Spermatogenesis, the process for producing spermatozoa, takes place in the seminiferous tubules. During spermatogenesis, the DNA of spermatogenic cells in the seminiferous tubules is subject to damage from such sources as reactive oxygen species.[1] The genomic integrity of spermatogenic cells is protected by DNA repair processes.[2] Deficiencies in the enzymes employed in these repair processes may lead to infertility.[2]

Additional images

  • Seminiferous tubule (right) with sperm (black, tiny, ovoid). H&E stain.
    Seminiferous tubule (right) with sperm (black, tiny, ovoid). H&E stain.
  • Longitudinal section through the left side of the scrotum and the left testis (seminiferous tubules visible in center, but not labeled).
    Longitudinal section through the left side of the scrotum and the left testis (seminiferous tubules visible in center, but not labeled).
  • Seminiferous tubule (transverse section).
    Seminiferous tubule (transverse section).
  • Photomicrograph of section through rat testis, showing seminiferous tubules.
    Photomicrograph of section through rat testis, showing seminiferous tubules.

See also

References

  1. ^ Mahfouz R, Sharma R, Thiyagarajan A, Kale V, Gupta S, Sabanegh E, Agarwal A (2010). "Semen characteristics and sperm DNA fragmentation in infertile men with low and high levels of seminal reactive oxygen species". Fertil. Steril. 94 (6): 2141–6. doi:10.1016/j.fertnstert.2009.12.030. PMID 20117780.
  2. ^ a b Gunes S, Al-Sadaan M, Agarwal A (2015). "Spermatogenesis, DNA damage and DNA repair mechanisms in male infertility". Reprod. Biomed. Online. 31 (3): 309–19. doi:10.1016/j.rbmo.2015.06.010. PMID 26206278.

Read other articles:

Sultan Agung: Tahta, Perjuangan, Cinta

Sultan Agung: Tahta, Perjuangan, CintaPoster rilis teatrikalSutradaraHanung Bramantyox.JoProduserDr. Bra. Mooryati SoedibyoHaryo Tedjo Baskoro, MBAYuli WarastutiDitulis olehIfan IsmailMooryati SoedibyoBagas PudjilaksonoJeremias NyangoenPemeranArio BayuMarthino LioAdinia WirastiPutri Marino Meriam BellinaLukman SardiTeuku Rifnu WikanaAsmara AbigailHans de KrakerPenata musikTya SubiaktoSinematograferFaozan RizalPenyuntingWawan I. WibowoPerusahaanproduksiMooryati Soedibyo CinemaTanggal ril...

 

New Democrat Coalition

Political caucus in United States This article is about the caucus in the United States House of Representatives. For the ideological Liberal faction of the Democratic Party in the United States, see New Democrats (United States). New Democrat Coalition AbbreviationNDCChairAnnie KusterWhipSusie LeeFounded1997; 27 years ago (1997)IdeologyLiberalism Third WayPolitical positionCenter[1][2][3] tocenter-left[4][5]National affiliationDe...

 

لا كورنوف - 8 مايو 1945 (مترو باريس)

لا كورنوف - 8 مايو 1945 La Courneuve - 8 Mai 1945La Courneuve - 8 Mai 1945 (بالفرنسية) معلومات عامةالمدينة لا كورنوفالتقسيم الإداري لا كورنوف البلد  فرنسا شبكة المواصلات مترو باريس المالك RATPالإدارة الهيئة المستقلة للنقل في باريس الخطوط الخط 7 لمترو باريس المحطات المجاورة حصن أوبارفيلييهعلى الخ�...

Perang Saudara Irak (2014–2017)

Halaman ini berisi artikel tentang perang saudara di Irak. Untuk perang saudara sebelumnya di Irak, lihat Perang saudara Irak. Untuk peperangan lain di Irak, lihat Perang Irak (disambiguasi). Perang Saudara Irak (2014–2017)Bagian dari Konflik Irak (2003–sekarang), Musim Dingin Arab, Intervensi militer terhadap ISIS dan Luapan dari Perang Saudara SuriahTanggal1 Januari 2014[16][17] – 9 Desember 2017[18](3 tahun, 11 bulan, 1 minggu dan...

 

Lacoste

LacosteJenisPerusahaan tertutupIndustriRitelDidirikan1933KantorpusatKorporat: Paris, PrancisDistribusi: Troyes, PrancisProdukPakaian, sepatu, parfumSitus webwww.lacoste.com Lacoste adalah perusahaan pakaian Prancis yang didirikan pada 1933, yang menjual pakaian, sepatu, parfum, kacamata, jam tangan, dan yang paling dikenal, baju polo. Perusahaan ini dikenal dengan logonya yang berupa buaya. Lacoste bermarkas di Paris, dan markas produksinya berada di Troyes. Namun Lacoste memiliki pabrik di l...

 

Evolutionary developmental psychology

Psychology field concerned with Darwinian evolution Part of a series onPsychology Outline History Subfields Basic psychology Abnormal Affective neuroscience Affective science Behavioral genetics Behavioral neuroscience Behaviorism Cognitive/Cognitivism Cognitive neuroscience Social Comparative Cross-cultural Cultural Developmental Differential Ecological Evolutionary Experimental Gestalt Intelligence Mathematical Moral Neuropsychology Perception Personality Positive Psycholinguistics Psychoph...

Vachellia drepanolobium

Species of legume Whistling thorn Conservation status Least Concern  (IUCN 3.1)[1] Scientific classification Kingdom: Plantae Clade: Tracheophytes Clade: Angiosperms Clade: Eudicots Clade: Rosids Order: Fabales Family: Fabaceae Subfamily: Caesalpinioideae Clade: Mimosoid clade Genus: Vachellia Species: V. drepanolobium Binomial name Vachellia drepanolobium(Harms ex Sjöstedt) P.J.H.Hurter[2] Synonyms Acacia drepanolobium Harms ex Sjöstedt Vachellia drepanolobium, mo...

 

Wessobrunn Prayer

The Wessobrunner Gebet in Clm 22053[1] The Wessobrunn Prayer (German: Wessobrunner Gebet, also Wessobrunner Schöpfungsgedicht, Wessobrunn Creation Poem) is among the earliest known poetic works in Old High German, believed to date from the end of the 8th century. Provenance and reception The poem is named after Wessobrunn Abbey, a Benedictine monastery in Bavaria, where the sole manuscript containing the text was formerly kept. The abbey was dissolved in 1803 and its library incorpor...

 

Associazione Calcio Brescia 1955-1956

Voce principale: Brescia Calcio. Associazione Calcio BresciaStagione 1955-1956Sport calcio Squadra Brescia Allenatore Osvaldo Fattori Presidente Comitato di reggenza Serie B7º posto Maggiori presenzeCampionato: Carta, Raimondi (32) Miglior marcatoreCampionato: Rebizzi (7) 1954-1955 1956-1957 Si invita a seguire il modello di voce Questa pagina raccoglie le informazioni riguardanti l'Associazione Calcio Brescia nelle competizioni ufficiali della stagione 1955-1956. Indice 1 Stagione...

Daftar kecamatan dan kelurahan di Kabupaten Paser

Peta lokasi Kabupaten Paser Berikut adalah daftar kecamatan dan kelurahan di Kabupaten Paser, Provinsi Kalimantan Timur, Indonesia. Kabupaten Paser terdiri dari 10 kecamatan, 5 kelurahan, dan 139 desa. Pada tahun 2017, jumlah penduduknya mencapai 254.503 jiwa dengan luas wilayah 7.730,88 km² dan sebaran penduduk 33 jiwa/km².[1][2] Daftar kecamatan dan kelurahan di Kabupaten Paser, adalah sebagai berikut: Kode Kemendagri Kecamatan Jumlah Kelurahan Jumlah Desa Status Daftar De...

 

Welsh Football League Division One

MacWhirter Welsh League First DivisionSport Calcio TipoClub FederazioneUEFA Paese Galles OrganizzatoreFederazione calcistica del Galles Cadenzaannuale Partecipanti16 Promozione inWelsh Premier League Retrocessione inWelsh Football League Division Two Sito Internethttp://www.welshleague.org.uk/ StoriaFondazione1904 Detentore Llanelli Town Edizione in corsoWelsh Football League Division One 2019-2020 Modifica dati su Wikidata · Manuale La Welsh Football League Division One (attu...

 

Peter Mayhew

British-American actor (1944–2019) For other people named Peter Mayhew, see Peter Mayhew (disambiguation). Peter MayhewMayhew at the 2015 Florida SuperconBornPeter William Mayhew(1944-05-19)19 May 1944Barnes, Surrey, EnglandDied30 April 2019(2019-04-30) (aged 74)Boyd, Texas, USResting placeAzleland Memorial Park and Mausoleum Reno, Texas, USNationalityUnited KingdomUnited StatesOccupationActorYears active1976–2016Known forPlaying Chewbacca in the Star Wars franchiseHeight7&...

German submarine U-1165

German World War II submarine ORP Krakowiak is preparing for the U-1165 towing operation History Nazi Germany NameU-1165 Ordered14 October 1941 BuilderDanziger Werft AG, Danzig Yard number137 Laid down31 December 1942 Launched20 July 1943 Commissioned17 November 1943 Fate Surrendered on 9 May 1945 Sunk on 30 December 1945 during Operation Deadlight General characteristics [1] Class and typeType VIIC/41 submarine Displacement 759 tonnes (747 long tons) surfaced 860 t (846 long ton...

 

Pakistani cricket team in Ireland in 2024

International cricket tour Pakistani men's cricket team in Ireland in 2024    Ireland PakistanDates 10 – 14 May 2024Captains Paul Stirling Babar AzamTwenty20 International series The Pakistan men's cricket team is scheduled to tour Ireland in May 2024 to play three Twenty20 International (T20I) matches against Ireland.[1][2] The series will form part of both teams' preparation ahead of the 2024 ICC Men's T20 World Cup.[3] It will be first bilateral T20...

 

Köchel catalogue

Chronological catalogue of compositions by Wolfgang Amadeus Mozart This is a mostly complete list of the works of Wolfgang Amadeus Mozart, according to the sixth edition of the Köchel catalogue. For a selective list of his works, grouped by genre, see List of compositions by Wolfgang Amadeus Mozart. Köchel-Verzeichnis, published 1975 in East Germany The Köchel catalogue (German: Köchel-Verzeichnis) is a chronological catalogue of compositions by Wolfgang Amadeus Mozart, originally created...

Chlorure de plomb(II)

Chlorure de plomb(II) Identification Nom UICPA chlorure de plomb(II)dichlorure de plomb Synonymes chlorure plombeuxcotunnite No CAS 7758-95-4 No ECHA 100.028.950 No RTECS OF9450000 PubChem 166945 SMILES [Cl-].[Cl-].[Pb+2] PubChem, vue 3D InChI InChI : vue 3D InChI=1S/2ClH.Pb/h2*1H;/q;;+2/p-2 InChIKey : HWSZZLVAJGOAAY-UHFFFAOYSA-L Apparence solide blanc inodore Propriétés chimiques Formule Cl2PbPbCl2 Masse molaire[1] 278,1 ± 0,1 g/mol Cl 25,5 %, ...

 

Conduct disorder

Developmental disorder Not to be confused with Disorderly conduct. This article's lead section may be too short to adequately summarize the key points. Please consider expanding the lead to provide an accessible overview of all important aspects of the article. (October 2020) Medical conditionConduct disorderPhysical abuse and bullying, such as this boy attacking another boy, is a characteristic of a child with an established conduct disorder.SpecialtyPsychiatry, pediatrics, clinical psycholo...

 

Itamar Procaccia

Israeli physicist and chemist (born 1949) This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately from the article and its talk page, especially if potentially libelous.Find ...

2005 Appalachian State Mountaineers football team

American college football season 2005 Appalachian State Mountaineers footballNCAA Division I-AA championSoCon championNCAA Division I-AA Championship, W 21–16 vs. Northern IowaConferenceSouthern ConferenceRankingSports NetworkNo. 1[1]Record12–3 (6–1 Southern)Head coachJerry Moore (17th season)Offensive coordinatorCollaborative[2]Offensive schemeMultiple spreadDefensive coordinatorJohn Wiley (15th season)Base defense4–3Home stadiumKidd...

 

Arunachal Pradesh

State in northeast India Arunachal redirects here. For the hill at Thiruvannamalai, see Arunachala. For other uses, see Arunachalam (disambiguation). State in Northeast India, IndiaArunachal PradeshStateFrom top left to right: Golden Pagoda, Namsai, Tawang Monastery, Tutsa Naga Dancers, Ziro valley, Pakke Tiger Reserve, Sela Pass Emblem of Arunachal PradeshEtymology: Arunachal ('dawn-lit mountains') and Pradesh ('province or territory')Nickname: Land of Rising SunMotto: Satyameva Ja...