The optimum kukura chiuno, nepamuviri uye pakusununguka

Wide muhudyu kwemazana emakore zvakurukurwa chiratidzo chokubereka vakadzi - chiratidzo vanamai vanokwanisa zvakanaka. Anogona mushonga ano dzakatsigira kuti ukuru chiuno chaizvoizvo basa rinokosha pakuti amai? Muchiitiko chino, hazvisi pamusoro zvikanganiso kana mashura, asi achabatira uchenjeri.

Anatomical zviri dzevanhu chiuno

Vanodzidza nezvevanhu refu kusvika mhedziso kuti mari bipedalism kwevanhu akatanga kuchinja mune nemamiriro marangwanda zvarwo, uye kukura chiuno iri kuridzwa kwete rokupedzisira basa. Vana vanoberekwa vasina kugadzirira akazvimirira vapenyu kana ichienzaniswa akawanda mhuka: murume mwana haagoni pakarepo pashure pokuzvarwa kutevera mai, haisi vakapakata rwokudzivirira masking zvigadziriswe.

Izvi zvinoita nyore kutakura genera, somugumisiro zviri womunhu nokuberekwa Canal kujekesa tichienzanisa mhuka, uye kuberekwa fetus zviduku hazvisi zvakanaka.

Kana kunyoresa amai vanepamuviri munhu gayinakorojisiti hazvo akaongorora kwete chete mukuru mamiriro nhengo, asiwo inorangarira zvaidiwa mufananidzo - ukuru chiuno panguva yepamuviri regai chaidzo kuchinja. Zvakakosha kunzwisisa kuti iyi, zvinhu zvose hama, uye pazviruva havagoni kuva kwakakwana mavari uye pachinhu hombe mudumbu.

Wide muhudyu - chiedza pakusununguka?

Folk uchenjeri kare akanongedza ukuru chiuno vanamai sechivimbiso njodzi amai. Asi, sezvataurwa pamusoro apa, michero zvinogona makuru, kunyange rakabudirira kwose kuvaka vanaamai vatsva. The elasticity yokuberekwa canal, mukana wokuvhiya - izvi zvose kunowedzera zvikuru mukana wokuti zvakanaka kupedza mutoro.

Zvisinei, haufaniri kungovimba pamusoro parameters metered rupo hunhu. Wrong nzvimbo mudumbu uye zvichiita yematambudziko pamuviri chero zvazvingava, ndizvo zvinokonzera yakawedzera hanya utano amai vanepamuviri. Chete ukuru chiuno havagoni aripire matambudziko zvose zvinogoneka, uye zvinofanira kunzwisiswa.

Relativity mitemo muviri

Kana kutanga kuongorora ane pamuviri kwasvika kumira ndizvidavirire chiremba anoitisa nekuyera chiuno parameters vachishandisa chaiyo chokushandisa. Panyaya iyi, sezvo ukuru chiuno, mwero akatsunga zvichienderana norudzi mufananidzo mukadzi. Somuenzaniso, mashoko interosseous kukura, akayera pakati Anterior mukuru iliac namatemo, kazhinji fluctuates pakati 25-26 cm asi ndozvakajairwa nokuda European mukadzi avhareji yakakwirira uye avhareji uremu.

Zvikuru kukosha hakusi kukura mune masendimita, uye anatomically zvakarurama pakuenzanisa ose kuyerwa parameters. Narrow chiuno ichaongororwa, iyo dzinenge imwe parameter iri kanganisika pasi nehafu kusvika masendimita maviri kana kupfuura. Izvi anotyora Zvakanyanya Kunaka Panguva Yepamuviri anatomically zvakarurama nepakati Kurongwa, kuona kupenya vasiri basa pane vabudirira dzimwe zvinoriumba. With rakamanikana chiuno obstetricians yakarumbidza zvakasimba pamuviri muchipatara kubva vhiki 38 pamuviri kuti vakachengeteka.