Mukati
Urume hunogadzirwa sei?
Kuvhiya kwakapfava kunotanga mu seminiferous chubhu ye testes, uko tembiricha yakadzikira (34 ° C). A sine qua non yekushanda kwavo kwakanaka nekuti kana machende aive mukati memuviri pachawo, tembiricha yemuviri (37 ° C) yakanyanya kukwira kuti iite spermatogonia, masero anozoshanduka kuva sperm. Pamusoro pezvo, vekupedzisira vanotama panguva yekushandurwa kwavo uye vanowana zvinhu zvitsva padanho rega rega. Nokudaro, kubva kune seminiferous tubes ye testes, inopinda mu epididymis, kamugero kadiki pamusoro pe testis umo vanowana flagella yavo, vachivabvumira kufamba. Chekupedzisira, kumira kwekupedzisira: seminal vesicles painosanganiswa nemvura inofambiswa panguva yekubuda. Kuziva: murume anogona kuramba akabereka aine testicle imwe chete, kana inoshanda zvakajairika.
Urume hune mamiriyoni embeu
Ce opaque uye chena mvura inovanzwa mumaseminal vesicles apo inowedzerwa mukudya (amino acids, citric acids, fructose…) asiwo muprostate iyo inoburitsa inenge hafu yembeu. Ikoko, mvura iyi inosanganiswa nembeu inosvika nepavas deferens (musuwo uri pakati pe epididymis ne vesicle) kuti iumbe urume, ndiko kuti, mbeu inobereka. Nekubuda kwega kwega, murume anodurura 2 kusvika ku6 ml yembeu, ine inenge mamiriyoni 400 espermatozoa.
Pane here nguva dzakaorera kupfuura dzimwe kuvanhu?
Spermatogenesis inotanga pakuyaruka uye inoenderera mberi kwehupenyu hwose, zuva rega rega, maawa makumi maviri nemana pazuva. Sevanhukadzi, hapana macycle. Kunze kwekunge paine dambudziko rekurapa rinokonzera kushaya mbereko, murume saka haapererwe urume. Zvisinei, pashure 50, zvinhu kuchinja zvishoma : urume hushoma uye hwemhando yakaderera. Asi izvi hazvinei nekubereka kwevakadzi, izvo zvinopera zvachose panguva yekuenda kumwedzi.
Spermatogenesis ndiyo inoratidzira iyo kugadzirwa kwesperm. Spermatogenesis inotora zvishoma pamusoro pemazuva makumi manomwe (inenge mwedzi miviri nehafu). Zvinoitika mumatanho akawanda. Pakutanga, inotanga negermline stem masero, anonzi spermatogonia. Izvi zvinowedzera uye zvinoshanduka kuita spermatocytes, ipapo spermatids uye pakupedzisira spermatozoa. A spermatogonia chete inopa pakati pemakumi matatu ne70 urume. Iri panguva iyi yekupedzisira iyo kupatsanurwa kwesero kunoitika (meiosis), panguva iyo sero rinorasikirwa nehafu yemakromosomes aro. Urume nokudaro hunopihwa machromosomes makumi maviri nematatu. Pavanosangana neoocyte, iyo inewo machromosomes makumi maviri nematatu, vanoita zai rine 23 chromosomes.
Tinogona here kugonesa kubereka kwevarume?
Mune varume, hapana chikonzero chekunongedza mazuva akanaka senge muvakadzi. Pane rimwe divi, fodya (sedoro) inoderedza zvakanyanya kubereka muvarume, kunyanya nekuchinja kunaka kwembeu. Kurega kusvuta kunobvumira kuti udzore kubereka kwakakwana paunongorega kusvuta sezvo urume hunoramba huchizvivandudza. Kudya kwakawanda mumafuta akazara kunoderedza kubereka! Saka dzivisa ndiro dzemaindasitiri, makeke, ndiro dzakapfuma (chizi, zvicherwa zvinotonhora, nyama mumasosi) uye sarudza mafuta akanaka (saOmega 3). Kugara uchisimbisa muviri kunobatsira hutano hwakanaka hwembeu uye inokubvumira kuzadza ne vitamin D. Kazhinji, zvinokurudzirwa kuchengeta a mararamiro ane hutano nenguva yekurara yenguva dzose, nguva shoma pamberi pezviratidziro uye kudzivirira kuratidzwa kune zvinokanganisa endocrine.
Yellow, transparent sperm: ruvara runorevei?
Kazhinji urume huchena muruvara, asi hunogona zvakare kujeka kana kucheneruka zvishoma. Kana urume huyero, ichi chinogona kunge chiri chiratidzo chechirwere chinogona kukanganisa kubereka. Inogonawo kuratidza oxidation yespermine, puroteni iyo inogadzirwa kunyanya kana kusangana kusiri nguva dzose. Muchiitiko chemavara embeu yakadudzwa, zvinokurudzirwa kuita a bacteriological kuongorora urume zvinorairwa nanachiremba wezvehutano.
Urume husina kusimba here?
Urume hunonzwa acidity iyo inoaita neutralizes. Zvisinei, chikadzi chechikadzi inzvimbo ine acidic yakawanda kana shoma (inova neacidic mushure mekuvhiya). Asi panguva yekugadzirwa kwayo, urume hunowana nhovo: seminal fluid (iyo inoumba urume) yakashongedzwa nemhando dzeanti-acidity. Mvura iyi inodzivirira urume. Kupisa kunoitawo kuti urume huwedzere panjodzi kuburikidza nekupfeka hembe dzakasimba, kugezesa kakawanda, kusashanda mumotokari kana munzvimbo yakanyanyisa kupisa.
Urume hunoita sei maoocyte?
Ane zvishandiso zvakawanda kune chikwereti chake. Iyo inoumbwa nezvikamu zvinoverengeka izvo zvese zvinopindira mu urume. Kutanga, musoro iwo pachawo unosanganisira zvikamu zviviri zvakasiyana: iyo acrosome, yakazadzwa ne enzyme inogona kupinza goko reoocyte, uye nucleus, inotakura chromosomal baggage yesero (inozosangana muoocyte kuita zai) . Chimedu chepakati chiri pazasi pemusoro inzvimbo inochengeterwa zvinovaka muviri kuitira kuti urume hurambe huripo panguva yakamirira kusangana. Pakupedzisira, flagellum inomubvumira kuti afambe kuti asvike nokukurumidza sezvinobvira the ovum.