Form, aiki da kuma girman da maniyyi cell

Pregnancy a mace kwayoyin faruwa sakamakon ci biyu gametes. Daya daga cikin su ne ake kira maniyyi, da sauran - da kwai. Mene ne size na maniyyi? Abin da siffofi muhimmi jam cell? The maniyyi ne daban-daban daga cikin kwai? Amsa ga dukkan wadannan tambayoyi za a sami.

Namiji haihuwa tsarin

haifuwa aiki a cikin jiki wakilin karfi rabin yawan mutãne yi wasu gland da kuma gabobin:

• golaye da appendages.
• vas deferens.
• prostate.
• seminal vesicles.
• bulbourethral gland shine yake.
• Kwalatai (Scrotum);
• azzakari.

Duk na sama tare kira a matsayin namiji haihuwa tsarin. Yana kafa maniyyi. Wannan kalma tana nufin ne da ɗa namiji Kwayoyin iya hadi. Ta hanyar unprotected jima'i maniyyi bar namiji jima'i tsarin da kuma shigar da mace jiki.

The ayyuka na musamman Kwayoyin

Maniyyi - a tsarin a cikin abin da kwayoyin bayanai da aka dauke maza. Ayyuka a cikin na musamman Kwayoyin na jiki wasu namiji:

• da nassi na mace al'aura fili (size da kuma tsarin da maniyyi mutum ya yale shi ya shawo kan daban-daban cikas).
• shigar azzakari cikin farji cikin mace jam sel, kira kwai.
• kyautatuwa daga cikin kwayoyin abu.

Shi ne ya kamata a lura da cewa a lokacin kawance a mace ta jiki samun maniyyi. Ya kunshi seminal ruwa da maniyyi Kwayoyin dakatar da shi. Male jam sel a maniyyi na kunshe da wata babbar adadin. Amma balagagge kwai a cikin mace jiki ne kawai na musamman. Daya kawai namiji jam sel ba zai iya yi duk da ayyuka. A babbar rawar a shi taka leda da size da kuma siffar da maniyyi.

A tsarin da spermatozoon: da kai da wuya

Domin ne da ɗa namiji Kwayoyin suna halin da takamaiman tsari, wanda ya samar da da ikon motsa, kwan da ya hadu. Maniyyi ne m tsarin da dogon flagellum. Mene ne tsarin da cell? Saboda haka, da maniyyi ne wakilta uku aka gyara:

• shugaban.
• wuyansa.
• wutsiya.

Head - wannan m rabo daga maniyyi. A da saman ne acrosome. Saboda haka shi ake kira vesicle da musamman gina jiki zama dole ga ovum shigar azzakari cikin farji ta hanyar da m daina kai hare hare. The shugaban kuma ya ƙunshi wani kwaya. Yana rike da rabin adadin namiji kayyade bayanai (DNA). Wani bangaren na shugaban - da centrosome. Shi facilitates da motsi na da wutsiya.

A kashi na biyu na maniyyi - shi ta wuyansa. Yana da wani fibrous yanki dake haɗa kai da wutsiya. Wannan tsari ne sosai m. Wannan yanayin sa da motsi na da maniyyi. Tare da sassauci na shugaban oscillates daga gefe zuwa gefe.

A tsarin da maniyyi wutsiya

Kafin ta kwatanta da girman da maniyyi cell, shi wajibi ne don la'akari da shi a sulusin - a flagellum. Shi ne ake kira da wutsiya. Yana hada da dama sassan:

1. Intermediate. Shi ne da thickest ɓangare na maniyyi wutsiya. Yana yana karkace mitochondrial Layer wanda ya fitar da makamashi domin da motsi na da namiji jam cell.
2. Cif. Wannan rabo daga maniyyi kunshi microtubules. Su m m Layer rufe zaruruwa da m daina kai hare hare.
3. Ƙare. A wannan ɓangare na m farji maniyyi da kuma m zaruruwa zama sirara. Shafi ne mai bakin ciki jikin tantanin.

Bayan familiarized tare da tsarin da karshen wani ɓangare na maniyyi, shi za a iya ƙarasa da cewa wutsiya tapers hankali, daga sansaninta da tip. Wannan alama samar da bicheobraznye yunkuri na namiji sel haihuwar kamar yadda ka motsawa ta cikin mata kaciya fili a search na ovum.

girma maniyyi

Male jam sel ne kadan. Girman mutum maniyyi kamar haka:

• Kwayoyin total tsawon - game da 55 microns.
• shugaban tsawo - 2.5 microns, nisa - 3.5 mm, tsawon - 5.0 microns.
• cervix maniyyi - game 4.5 microns a tsawon;
• wutsiya tsawon - 45 m.

Male jam sel ba za a iya gani da ido tsirara. The girman da maniyyi za a iya gani a karkashin magnification. Yana da zarar ya yi Leeuwenhoek. A 1677, ya bayyana ma'ana. Scientist, tun sanya gano, shawara cewa wadannan Kwayoyin suna da hannu a hadi. Duk da haka, da bayanai jama'a ba a dauki tsanani. Game da shekaru 100, mutane sun yi imani da maniyyi parasitic kwayoyin.

Da samuwar namiji jam sel

A cikin tambaya game da abin da size maniyyi amsa. Yanzu shi wajibi ne don la'akari da yadda wadannan Kwayoyin suna kafa. Maniyyi Kwayoyin bayyana da kuma balagagge a musamman gland kira da testes. Wadannan Tsarin suna located in Kwalatai (Scrotum). Sun ƙunshi wata babbar yawan seminiferous tubules, liyi da musamman Kwayoyin (spermatogonia). Kamar yadda da ɗa namiji Kwayoyin suna kafa a nan? Wannan tsari zai fara a lokacin balaga:

• spermatogonia raba.
• a sakamakon sabon Kwayoyin.
• balagagge maniyyi ta hanyar da Sertoli Kwayoyin, secreting wani iri-iri na gina jiki.

Kan aiwatar da samuwar namiji gametes aka kira spermatogenesis. Yana da quite wuya. A kan samuwar da primary spermatocytes tsari ba ya kawo karshen, saboda Kwayoyin bayyana muhimmi a cikin cikakken sa na chromosomes. Bugu da ari, wadannan Kwayoyin sha meiosis. A sakamakon haka, akwai spermatids zuwa rabin adadin chromosomes. Sel hankali na kara girma. A sakamakon haka ne balagagge maniyyi.

Movement of namiji jam sel

Ka yi la'akari da aikin da kuma girman da maniyyi cell, kana bukatar ka familiarize kanka da yadda jima'i cell motsa. The maniyyi ne a namiji jiki, ne m. Su passively motsawa ta al'aura yankuna. Movement wutsiyoyi quite kaɗan. Active maniyyi acquire bayan samun shiga cikin mace jiki. Su gudun iya zama mafi girma daga 30 cm a kowace awa.

Bayan kawowa a cikin mace ta jiki samun fiye da miliyan 300 maniyyi. Mafi yawansu ba su kashe a cikin farji saboda da ya fi karfinsu yanayi. Wasu namiji jam sel iya cimma mahaifa canal. Duk da haka, wannan sashe na waƙar da ya jũya zuwa tafi, ba dukan maniyyi. Madala zuwa gare su da samun mahaifa gamsai.

Maniyyi baya da cervix, a cikin mahaifa fall. A matsakaici a cikin wannan fili na can ciki jiki ne moriya ga namiji jam sel. Daga cikin mahaifa su aka aika zuwa fallopian shambura, inda hadi faruwa. Nazarin ya nuna cewa kawai 'yan dubu maniyyi wuce wannan hanya.

A rayuwa span na maniyyi

cell samuwar yana for game da 74 days. Maturation da su nassi ta hanyar da epididymis da vas deferens daukan wani wuri 26 days. Wannan ya nuna cewa maniyyi iya zama na lokaci mai tsawo a cikin jikin mutum. A halin da ake ciki ne daban-daban bayan kawowa. The maniyyi jam sel zauna aiki ba fiye da a yau (tsawon wannan lokaci ya dogara da waje dalilai kamar yanayi zazzabi, adadin haske, zafi).

A cikin mace rai span iya zama daban-daban. Idan gudun yunkuri na maniyyi rinjayar da size, tsowon lokacin da wanzuwar wannan m. Alal misali, a cikin farjin namiji jam sel aka kashe bayan 2 hr. A cikin mahaifa da kuma fallopian shambura yanayi ne mafi moriya ga maniyyi. Ga su iya zama har zuwa kwanaki 5 a wani aiki jihar a search ko jira kwai.

Kwatanta maniyyi da qwai

A namiji lokaci zuwa lokaci kafa da kuma balagagge, sabon jima'i Kwayoyin. Tare da kowane aikin ma'amala da maniyyi da aka saki, dauke da wata babbar adadin maniyyi. Amma a wani mace ta jiki ore daya kawai jima'i cell daya hailar sake zagayowar (kamar 28-30 kwanaki).

Yanzu shi wajibi ne don kwatanta girman da kwai da kuma maniyyi. Male gamete, kamar yadda aka ambata a sama, shi ne kankanin tsarin. A kwai ne gaba daya daban-daban. Its size Can fuska daga 0,15 zuwa 0.25 mm. Har ila yau, ya kamata a lura shi ne cewa kwai yana gyarawa. Bugu da kari, yana da wani wajen short rayuwar jama'a. Bayan saki daga gidan kwai da kuma fallopian tube a lamba tare da shi zai iya zama game da 24 hours. Idan hadi ba ya faruwa, da kwai mutu.

A ƙarshe, shi ne ya kamata a lura da cewa girman da maniyyi cell ne kadan. Duk da wannan, shi yana da wani muhimmin aiki, wanda ya kunshi a cikin hadi da kwai. Duk da haka, don cim ma wannan iya ba duk maniyyi. Da zarar a cikin mace jiki, da suka je ta hanyar zabin yanayi. Rauni da ba daidai ba da ginin Kwayoyin mutu sosai da sauri ba tare da kai cikin mahaifa. Wasu kawai ba su da lokacin da za a samu ga manufa. Kawai ya fi sauri da kuma mafi yawan aiki maniyyi, bypassed da matsalolin samu shiga a cikin kwai da kuma ƙara to shi su kayyade bayani.