Didi ntxaib yog kwv tij?

Cov txheej txheem:

Didi ntxaib yog kwv tij?
Didi ntxaib yog kwv tij?
Anonim

Puas yog di/di ntxaib zoo ib yam lossis fraternal? Di/di cev xeeb tub rau feem ntau ntawm tag nrho cov ntxaib cev xeeb tub thiab muaj peev xwm tsim ib tug zoo tib yam los yog fraternal ntxaib. Txhua tus kwv tij ntxaib yog di/di, tab sis tus ntxaib zoo ib yam kuj yog di/di.

Yuav ua li cas qhia tau tias Di Di ntxaib zoo ib yam?

Thaum menyuam ntxaib yug los, tus kws kho mob feem ntau muaj peev xwm txheeb xyuas seb tus menyuam ntxaib puas zoo ib yam lossis kwv tij los ntawm kev tshuaj xyuas cov placenta; Cov menyuam ntxaib zoo ib yam feem ntau sib koom ib qho placenta, thaum cov kwv tij ntxaib feem ntau yog nyob rau hauv ob lub placentas.

Dab tsi feem pua ntawm Di Di ntxaib yog kwv tij?

A 2004 kev tshawb fawb ntawm cov tswv cuab ntawm American College of Obstetricians thiab Gynecologists pom tias 81 feem pua ntawm cov kws kho mob xav tias cov menyuam ntxaib uas gestate nrog cov placentas cais yog kwv tij neej tsa. Qhov tseeb, 25 txog 30 feem pua ntawm cov menyuam ntxaib zoo ib yam muaj cov placentas thiab cov hnab amniotic.

Dab tsi yog qhov txawv uas Di Di ntxaib zoo ib yam?

30% ntawm di-di cev xeeb tub yog cov menyuam ntxaib zoo ib yam, thiab ntau tus kws kho mob tseem ntseeg tias kev xeeb tub di-di tuaj yeem ua rau tus menyuam ntxaib xwb.

txhais tau tias muaj Di Di ntxaib?

Dichorionic ntxaib yog ib daim ntawv ntawm ntau lub cev xeeb tub uas txhua tus menyuam ntxaib muaj qhov sib cais (cov ntshav muab) thiab cov hnab amniotic. Dichorionic ntxaib feem ntau yog-tab sis tsis yog ib txwm-fraternal (tsis zoo ib yam). Cov menyuam ntxaib sawv cev ntau dua li peb feem pua ntawm tag nrho cov menyuam yug hauv Tebchaws Meskas, nrog rau feem ntauua dichorionic.

Pom zoo:

Nthuav cov khoom
Puas yog homomorphism tib yam li isomorphism?
Nyeem ntxiv

Puas yog homomorphism tib yam li isomorphism?

Isomorphism yog homomorphism tshwj xeeb. Greek keeb kwm "homo" thiab "morph" ua ke txhais tau tias "zoo tib yam." Muaj ob qhov xwm txheej uas homomorphisms tshwm sim: thaum ib pab pawg yog ib pawg ntawm lwm pawg;

Yuav tau sawv los yog tshwm sim?
Nyeem ntxiv

Yuav tau sawv los yog tshwm sim?

Peb hom tshwm sim yog arise, sawv, arisen. Nws yog siv hauv cov ntsiab lus tseem ceeb: Ib lub sijhawm tshwm sim thiab nws txiav txim siab los ua txoj haujlwm hauv Brussels. Ib qho teeb meem tshwm sim nrog kuv daim ntawv hla tebchaws. Koj siv arose hauv kab lus li cas?

Nyob hauv qab ceg cov leeg nqaij gastrocnemius khoov?
Nyeem ntxiv

Nyob hauv qab ceg cov leeg nqaij gastrocnemius khoov?

Cov leeg nqaij gastrocnemius flexes ko taw ntawm pob qij txha- uas yog nws ua rau taw taw ko taw nqes los ntawm khoov nws ntawm pob taws pob taws, xws li thaum koj sawv ntawm koj. cov ntiv taw. Qhov kev txiav txim no hu ua plantar flexion. Lub gastrocnemius kuj flexes ceg ntawm lub hauv caug sib koom.