Sainzi yezvekurapa Muenzaniso wemuviri wepamuviri wemwana asati aberekwa Maitiro ekukura kweEmbryo seti yezvikamu gumi muenzaniso wechipatara cherabhoritari

Mamodheru gumi aya akagadzirirwa kuratidza hukama huripo pakati pekukura kwemwana ari mudumbu nechibereko panguva yekuzvitakura kwaGumiguru. Zai rinonzi rine mimba kana kuti rinoberekeswa mukati memavhiki maviri mushure mekuberekeswa; Mavhiki matatu kusvika masere mushure mekuberekeswa anonzi maembryo; Kubva pakupera kwevhiki rechisere, rinonzi fetus; mavhiki masere; Embryo ine urefu hwemasendimita matatu uye yatanga kutora chimiro chemunhu, ine musoro mukuru, maziso, nzeve, mhino nemuromo zvinoonekwa. Kuumbwa kwemwoyo kwekutanga uye kurova kwemoyo kunogona kuonekwa nekuongororwa kweultrasound. Pamavhiki gumi nemaviri, mwana ari mudumbu ane hurefu hwemasendimita manomwe kusvika mapfumbamwe uye anorema masendimita makumi maviri. Orthogonia yekunze yaitika, pane kushanda kusina kusimba mumakumbo, uye nzvimbo dze ossification dzakaonekwa mumapfupa mazhinji. Pamavhiki gumi nematanhatu, mwana ari mudumbu ane hurefu hwemasendimita gumi kusvika gumi nemanomwe uye anorema masendimita zana kusvika zana nemakumi maviri. Rine ganda dzvuku, rakatsetseka uye rinoonekera rine bvudzi diki revellus. Kuwedzera kukura kwemapfupa, kuongororwa kweX-ray kunogona kuona mumvuri wemapfupa, straightener yekunze inogona kusiyanisa murume nemukadzi. Kuongororwa kwedumbu kunogona kunzwa kurira kwemoyo wemwana ari mudumbu, vakadzi vane pamuviri vanogona kunzwa kufamba kwemwana ari mudumbu. Pamasvondo makumi maviri, mwana ari mudumbu anenge akareba 18 ~ 27cm, anorema 280 ~ 300g, ganda rake rakasviba, kujeka kwake kwaderera, muviri wake une mafuta emwana ari mudumbu, musoro wemwana uri mudumbu unoita 1/3 yemuviri, bvudzi rinokura, uye basa rekumedza rinotanga. Mavhiki makumi maviri nemana kureba kwemuviri wemwana 28 ~ 34cm, huremu 600 ~ 700g, mafuta ari mudumbu akatanga kuungana, makwinya eganda. Pamasvondo makumi maviri nemasere, mwana ari mudumbu anenge akareba 35 ~ 38cm uye anorema 100 ~ 1200g. Muviri wese mutete, ganda rake ratsvuka, mafuta ari mudumbu ari pachigunwe (chigunwe) nzara haisviki kumagumo emunwe (chigunwe). Muvakadzi, labia majora ine labia minora neclitoris, uye muvarume, machende ake adzika kusvika kumascrotum. Nekuda kwemafuta mashoma ari mudumbu, makwinya echiso, semurume mukuru. Kana vakaberekwa, vanogona kuchema, kumedza, uye kufambisa nhengo dzavo, asi havana simba uye vanoda kutarisirwa zvakanyanya kuti vararame. Mwana ari mudumbu ane mavhiki makumi matatu nemaviri akareba 40cm, anorema 1500 ~ 1700g, ganda rakasviba dema, bvudzi rechiso radonha, uye vanogona kurarama mushure mekutarisirwa kwakakodzera. Pamavhiki makumi matatu nematanhatu, mwana ari mudumbu ane kureba 45 ~ 46cm uye anorema 2500g. Mafuta ari pasi peganda, makwinya echiso anonyangarika, nzara yemunwe (chigunwe) yasvika pamunwe (chigunwe). Mushure mekuzvarwa, kukwenya nekuyamwa zvine mukana wakanaka wekurarama. Mwana ari mudumbu akura pamavhiki makumi mana, ane hurefu hwe 50cm uye huremu hwe 3000 ~ 3300g. Ganda racho rakatsvukuruka, mafuta ari pasi peganda akura zvakanaka, mwana ari mudumbu adzikira, uye bvudzi racho rareba 2 ~ 3cm. Nzara yemunwe yadarika pamusoro pemunwe. Kufamba kwemakumbo, kukwenya kukuru, kukwenya kwakasimba. Kureba kwemuviri wemwana ari mudumbu uye huremu zvinowedzera zvishoma nezvishoma nemwedzi wekubata pamuviri, kuitira kuti zvive nyore kurangarira, fomura inotevera inowanzo shandiswa kuverenga: mavhiki makumi maviri asati asvika pakureba kwepamuviri = sikweya yenhamba yemwedzi yekubata pamuviri (cm), mushure memavhiki makumi maviri ekureba kwepamuviri = nhamba yemwedzi yekubata pamuviri ×5 (cm).