Dab tsi ua rau lub duav nqaim?

Cov txheej txheem:

Dab tsi ua rau lub duav nqaim?
Dab tsi ua rau lub duav nqaim?
Anonim

Cov kws sau ntawv taw qhia rau qib tshuaj estrogen, uas nce thaum lub sijhawm puberty thiab poob qis tom qab hauv lub neej, raws li qhov yuav ua rau kev nthuav dav thiab tom qab nqaim hauv poj niam lub plab, tshwj xeeb yog vim estrogen paub tias cuam tshuam rau pob txha loj hlob thiab kev loj hlob.

hnub nyoog twg poj niam lub duav dav?

Nrog rau qhov pib ntawm kev puberty, tus txiv neej pelvis tseem nyob rau tib txoj kev loj hlob, thaum tus poj niam lub plab hnyuv loj hlob nyob rau hauv tag nrho cov kev taw qhia tshiab, ua kom dav thiab ncav cuag nws qhov dav ntawm lub hnub nyoog ntawm 25- 30 xyoo.

Lub duav nqaim ua rau me nyuam nyuaj?

Tus me nyuam loj

Tus me nyuam yuav dav me ntsis ntawm lub duav, thiab yog tias muaj, qhov no tuaj yeem ua rau qeeb qeeb. Ib yam nkaus, tus poj niam uas muaj lub plab nqaim - uas feem ntau ua rau nws nyuaj dua- tej zaum yuav muaj kev yug me nyuam vim yug me nyuam me.

txhais tau tias muaj lub plab nqaim?

Anthropoid pelvis yog nqaim thiab tob. Nws cov duab zoo ib yam li lub qe upright los yog oval. Platypelloid. Platypelloid pelvis tseem hu ua flat pelvis. Qhov no yog hom tsawg tshaj plaws.

Yuav ua li cas thiaj nthuav kuv lub plab nqaim?

Hmoov tsis zoo, tsis muaj qhov pov thawj los nthuav lossis nce koj lub plabloj rau kev yug menyuam. Hmoov zoo rau peb txhua tus, peb lub cev yog qhov ntse heev thiab tuaj yeem hloov kho rau cov kev hloov pauv uas tshwm sim rau nws. Thaum cev xeeb tub, koj lub cev yuav pib tso cov tshuaj hormones hu uarelaxin.

Pom zoo:

Nthuav cov khoom
Cov menyuam yaus hnub nyoog li cas?
Nyeem ntxiv

Cov menyuam yaus hnub nyoog li cas?

Cov me nyuam pib dov thaum ntxov li 4 hli. Lawv yuav pob zeb los ntawm ib sab mus rau sab, ib qho kev taw qhia uas yog lub hauv paus rau dov. Lawv kuj tuaj yeem dov los ntawm plab mus rau sab nraub qaum. Thaum 6 lub hlis, cov menyuam mos feem ntau yuav dov mus rau ob qho kev qhia.

Kuv puas tuaj yeem cog txiv lws suav rau hauv lauj kaub?
Nyeem ntxiv

Kuv puas tuaj yeem cog txiv lws suav rau hauv lauj kaub?

Nroj 'Moneymaker' txiv lws suav rau hauv lub txaj zoo uas tau txais rau 6 lossis ntau teev ntawm hnub ci txhua hnub. Cog cov yub tob dua li lawv nyob hauv lawv cov lauj kaub yub, yog li hauv qab txheej ntawm nplooj tsuas yog saum cov av saum npoo.

Puas enthalpy ntawm vaporization tsis zoo?
Nyeem ntxiv

Puas enthalpy ntawm vaporization tsis zoo?

Lub enthalpy ntawm condensation (los yog cua sov ntawm condensation) yog los ntawm txhais tau tias sib npaug zos rau enthalpy ntawm vaporization nrog rau qhov opposite sign: enthalpy hloov ntawm vaporization yeej ib txwm zoo (kub yog absorbed los ntawm cov khoom), whereas enthalpy hloov pauv ntawm condensation ib txwm tsis zoo (kub tawm los ntawm cov khoom) … Puas yog entropy ntawm vaporization zoo lossis tsis zoo?