Video: Cov tawv nqaij xim qub txeeg qub teg ua haujlwm li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Tus kheej tawv nqaij pigmentation yog qhov tshwm sim ntawm noob neej , yog cov khoom ntawm ob qho tib si ntawm tus kheej lub cev niam txiv ' caj pleev, thiab raug tshav. Qhov tseeb tawv nqaij xim ntawm tib neeg sib txawv yog cuam tshuam los ntawm ntau yam khoom, txawm tias ib qho tseem ceeb tshaj plaws yog cov xim melanin.
Hauv qhov no, ua li cas cov tawv nqaij dhau mus?
Polygenic Inheritance: Tib neeg tawv nqaij xim yog ib qho piv txwv zoo ntawm polygenic (ntau yam noob) qub txeeg qub teg. Ib lub genotype nrog txhua tus "tseem ceeb" cov peev txheej peev txheej (AABBCC) muaj ntau npaum li cas ntawm melanin thiab tsaus ntuj heev tawv nqaij . Ib genotype nrog tag nrho cov "recessive" cov noob me me (aabbcc) muaj qhov qis tshaj ntawm melanin thiab lub teeb heev. tawv nqaij.
Ib yam nkaus, tus menyuam daim tawv nqaij txiav txim siab li cas? A tus menyuam daim tawv nqaij xim tuaj yeem sib txawv heev, nyob ntawm qhov tus me nyuam hnub nyoog, haiv neeg los yog haiv neeg, kub, thiab seb puas los yog tsis menyuam yog quaj. Thaum a menyuam yog thawj yug, tus tawv nqaij yog xim liab tsaus rau ntshav xim . Raws li cov menyuam pib ua pa cua, lub xim hloov liab.
Raws li txoj cai, leej niam leej txiv twg txiav txim siab cov tawv nqaij?
Cov qib ntawm melanin yog qhov tseem ceeb txiav txim siab los ntawm noob caj noob ces; cov neeg yug los rau cov tawv nqaij ncaj ncees niam txiv yuav txais lawv niam txiv ncaj ncees tawv nqaij , raws li cov tib neeg yug los rau cov tawv nqaij tawv niam txiv yuav tau txais koob hmoov tawv nqaij . Qib ntawm kev ua tau zoo tawv nqaij pigmentation yog hu ua constitutive pigmentation.
Dab tsi yog cov noob tseem ceeb rau cov tawv nqaij?
Nws yuav siv ob qho tsis ua hauj lwm (recessive) MC1R alleles muab txoj kev sib zog tawv nqaij (cov qhov zoo ).
Pom zoo:
Thaum cov pa oxygen hauv cov ntshav qis Cov tawv nqaij yuav tshwm xim li cas?
Cov ntshav uas ploj lawm nws cov pa yog tsaus xiav-liab. Cov tib neeg uas cov ntshav muaj oxygen tsawg yuav muaj xim daj rau lawv cov tawv nqaij. Qhov mob no hu ua cyanosis. Raws li qhov ua rau, cyanosis tuaj yeem tshwm sim sai sai, nrog rau ua tsis taus pa thiab lwm yam tsos mob
Koj ua li cas tiv thaiv cov tawv nqaij tawv nqaij?
Kev tiv thaiv thiab kev tiv thaiv tej zaum yuav muaj xws li cov hauv qab no: Kev zam ntawm tus kab mob staphylococcal thawj zaug uas yuav ua rau muaj cov kab mob lom. Kev kho mob raws sijhawm ntawm cov kab mob staphylococcal tsim. Kev txheeb xyuas thiab kev kho tus kab mob asymptomatic
Npaum li cas ntawm daim tawv nqaij thiab daim tawv nqaij?
txog 2 hli Ua raws li qhov no hauv kev txiav txim siab, tuab npaum li cas ntawm cov epidermis nyob tom qab? Dermis thiab subcutaneous rog Nws yog tuab (nruab nrab 1 txog 4 hli) tshaj li daim tawv nqaij uas yog hais txog nyias li daim ntawv.
Dab tsi yog qhov qub txeeg qub teg ntawm Marfan syndrome?
Inheritance Pattern Tus mob no tau txais txiaj ntsig los ntawm tus qauv autosomal dominant, uas txhais tau hais tias ib daim qauv ntawm cov noob hloov pauv hauv txhua lub xovtooj yog txaus los ua qhov tsis sib haum xeeb. Tsawg kawg yog 25 feem pua ntawm Marfan syndrome tshwm sim los ntawm kev hloov pauv tshiab hauv FBN1 noob
Dab tsi yog cov leeg ntshav hauv lub cev fossa qub txeeg qub teg?
Antecubital fossa yog qhov kev nyuab siab ntiav nyob rau hauv pem hauv ntej ntawm cov leeg nruab nrab nruab nrab ntawm koj txhais tes. Cov hlab ntsha nruab nrab ntawm cov hlab ntsha koom nrog ob lub nkoj ntev tshaj plaws uas khiav mus txog qhov ntev ntawm koj txhais caj npab, hu ua cephalic vein thiab basilic leeg