Cov kev hloov hauv lub cev muaj zog hauv lub cev dhau los, muaj qee yam tshiab: nquag tso zis, mob taub hau, tsaug zog, tsis xav noj mov, xeev siab, thiab ntuav ntuav. Tej zaum yuav tsis paub hais tias qhov twg txaus ntshai yees rau tej salinity thiab marinades los ntawm. Cov phenomena yog cov cim qhia ntawm cov poj niam cev xeeb tub thaum ntxov. Qhov ua rau cov phenomena yog hormonal restructuring uas mus nyob hauv lub cev.
Lub sijhawm gestation yog tsib lub lim tiam: ua li cas rau tus poj niam?
Nws yuav tsum raug sau tseg tias ib tug neeg coob tus poj niam cev xeeb tub yuav tsis pom muaj cov xwm txheej saum toj no. Lawv yooj yim "nqis tshaj" los ntawm theem thaum ntxov ntawm kev xeeb tub uas tsis ntuav thiab xeev siab, uas yog los ntawm cov neeg muaj kev kos npe rau ntawm cev xeeb tub. Yog li, yog hais tias koj raug overlooked los ntawm xws li "me me joys" - koj yuav tsum tsuas yog kev khib. Tab sis yog lawv sawv daws pom, ib tug yuav tsum khaws cia: nws yuav yooj yim dua tom qab 12 lis piam. Nws muaj xws li ib pawg ntawm cov poj niam uas xav txog qhov tshwm sim thaum ntxov toxicosis ib qho tshwm sim, thiab tsuas tsis pom nws. Sim ua. Tab sis yog tias qhov tshuaj lom muaj zog tiv thaiv koj - nws yog qhov yuav tsum tau xa mus rau ib tus kws kho mob tshwj xeeb, tab sis tsis muaj qhov xwm txheej tsis siv nws tus kheej noj tshuaj.
Cov lus pom zoo hauv tsib lub lim tiam ntawm cev xeeb tub.
Cov lus pom zoo muab los ntawm lub lim tiam 1 tseem muaj feem xyuam.
• Ua raws li khoom noj uas muaj protein ntau thiab carbohydrates, uas txhawb kev zom cov zaub mov zoo.
• Tsis txhob noj rog thiab kib.
• Nws yog qhov yuav tsum tau sai, sai li sai tau thaum muaj kev tshaib plab.
• Nws yog qhov zoo dua rau haus ntau cov kua, muab qhov preference rau freshly squeezed juices los ntawm zaub thiab txiv hmab txiv ntoo.
• Tsum ntawm txaj kom ntsiag to, maj mam, yam tsis muaj kiag li.
• So kom txaus, vim pw tsaug zog zoo rau poj niam cev xeeb tub.
• Sim ua neeg zoo.
• Yog hais tias qhov ua npaws tau sawv lawm, cov kua qaub yuav pab tau so.
• Nws zoo dua yog tias tsis kam noj cov tshuaj ntsiav tshuaj, vim lawv txhua tus muaj kev mob tshwm sim.
• Ua kom tsis txhob ntxhov siab thiab ntxhov siab.
Tus me nyuam yav tom ntej yog tsib lub lis piam.
Tus menyuam zoo li tsib lub lis piam thaum nws cev xeeb tub li cas? Thaum 5 lub lim piam ntawm kev qoj ib ce, lub embryo hloov yig. Ua ntej, nws hloov cov kev hloov - nyob rau ntawm tsib lub as thiv tus me nyuam tsis zoo li ib lub tiaj disc, nws zoo li ntau yam zoo li ib tus cylinder cylinder. Qhov ntev ntawm uas yog 1.5 - 2.5 mm. Nyob rau lub sij hawm no, cov kws kho mob hu nws ua tus embryo.
Thaum lub sijhawm lub lim tiam no muaj cov kab lus ntawm lub siab thiab tus txiav. Pib mus rau nteg lub upper respiratory ib ntsuj av - trachea thiab larynx, lub plawv yog pw. Muaj ib qho kev kaw ib ntu - qhov kaw ntawm lub neural tube (kom deb li deb nruab nrab kem). Lub hlab ntsha neural - cov qauv ntawm lub hauv paus hauv lub hlwb thiab txheej txheem ntawm nws nyob rau hauv lub sij hawm ntawm zoo meej kaw - yog ib qho tseem ceeb tshwm sim. Tseem ceeb nyob rau hauv cov txheej txheem no yog faib rau koj cov kua qaub (folic acid) (muaj nyob rau hauv multivitamins lossis cais).
Ib qho tseem ceeb tshwm sim: lub lim tiam no, lub embryo muaj cov tsos ntawm gonoblasts - cov precursors ntawm nws (los yog nws) spermatozoa los yog oocytes. Hauv lwm nqe lus, koj tus menyuam twb muaj nws cov xeeb ntxwv thiab cov xeeb ntxwv txog yav tom ntej lawm! Qhov no tseem ceeb heev, tsis yog nws? Tsis tas li, nws zoo nkaus li txoj ntsiab cai ntawm qhov khoom ua si uas yog nyiam thaum yau thiab paub thoob plaws lub ntiaj teb - Lavxias nested menyuam roj hmab.