![Txoj kev npaj cev nqaij daim tawv yog dab tsi? Txoj kev npaj cev nqaij daim tawv yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14106930-what-is-a-segmented-body-plan-j.webp)
Video: Txoj kev npaj cev nqaij daim tawv yog dab tsi?
![Video: Txoj kev npaj cev nqaij daim tawv yog dab tsi? Video: Txoj kev npaj cev nqaij daim tawv yog dab tsi?](https://i.ytimg.com/vi/aljWdoecQhM/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Segmentation hauv biology yog kev faib qee yam tsiaj thiab nroj tsuag lub cev npaj mus rau hauv cov kab lus ntawm ntu ntu. Segmentation ntawm lub cev npaj yog ib qho tseem ceeb rau kev tso cai rau kev txav mus los thiab kev loj hlob ntawm qee yam lub cev ntu. Nws kuj tso cai rau kev rov tsim dua tshiab hauv cov tib neeg tshwj xeeb.
Tsis tas li ntawd, nws txhais li cas kom muaj lub cev segmented?
A segmented lub cev yog ib tug faib ntawm ib tug tsiaj lub cev plan, uas lub cev yog muab faib ua functional units. Cov koog no tsim 3 ntu, tsis hais tus kheej lossis ua ke nrog lwm ntu. Arthropods, lub ntsiab lus cov tsiaj nrog cov khoom sib txuas ntxiv xws li zaj duab xis pom saum toj no, tau faib lub cev.
Tom qab ntawd, lo lus nug yog, cov tsiaj twg muaj lub cev segmented? Tsiaj pawg uas poob hauv qab chordate phylum muaj xws li ntses, amphibians, tsiaj reptiles, noog thiab tsiaj txhu. Chordates siv heteromeric segmentation uas qhov kev sib txuas ntawm cov ntu sib cais tau tshwm sim ntau dua. Caj npab, ceg, lub cev thiab lub taub hau tag nrho muab cov haujlwm sib txawv uas xav tau los txhawb nqa lub cev tag nrho thiab nquag.
Ib sab ntawm qhov no, puas yog tib neeg lub cev tau faib?
Segmentation nyob rau hauv tib neeg lub paj hlwb. Segmentation yog yam ntxwv ntawm lub cev uas tus tib neeg lub cev tau muab faib ua cov subunits rov qab hu ua ntu uas tau teem tseg raws li qhov ntev axis. Hauv tib neeg , cov segmentation yam ntxwv pom hauv lub paj hlwb yog kev lom neeg thiab kev hloov pauv tseem ceeb.
Cov vertebrates puas muaj segmented lub cev?
Vertebrates yog chordates thiab ib tug txhais feature ntawm no phylum yog lub xub ntiag ntawm segmented cov leeg nqaij.
Pom zoo:
Dab tsi yog txheej txheej sab saum toj ntawm daim tawv nqaij nyob ib sab ntawm daim tawv nqaij?
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Lub dermis txuas cov epidermis mus rau hypodermis, thiab muab lub zog thiab kev ywj pheej vim muaj cov collagen thiab elastin fibers. Nws tsuas muaj ob txheej: txheej txheej papillary nrog papillae uas nthuav mus rau hauv daim tawv nqaij thiab qis dua, txheej txheej reticular uas muaj cov ntaub so ntswg sib txuas xoob
Dab tsi yog qhov txawv ntawm daim tawv nqaij thiab daim tawv nqaij daim ntawv xeem?
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Qauv: Sib sib zog nqus ntawm daim tawv nqaij; connective ntaub so ntswg muaj li ntawm ob txheej. Muaj nuj nqi: Muaj lub luag haujlwm rau cov txheej txheem muaj zog thiab yoog raws ntawm daim tawv nqaij; lub epidermis pauv cov pa roj, cov khoom noj, thiab cov khoom pov tseg nrog cov hlab ntsha hauv lub dermis
Puas yog lo lus dav dav txhais tau tias yog mob ntawm daim tawv nqaij lossis pob khaus uas tuaj yeem muaj ntau yam ua rau nws yog ib qho cim ntawm ntau hom tawv nqaij tsis xws luag?
![Puas yog lo lus dav dav txhais tau tias yog mob ntawm daim tawv nqaij lossis pob khaus uas tuaj yeem muaj ntau yam ua rau nws yog ib qho cim ntawm ntau hom tawv nqaij tsis xws luag? Puas yog lo lus dav dav txhais tau tias yog mob ntawm daim tawv nqaij lossis pob khaus uas tuaj yeem muaj ntau yam ua rau nws yog ib qho cim ntawm ntau hom tawv nqaij tsis xws luag?](https://i.answers-medical.com/preview/medical-health/14071168-is-a-general-term-defined-as-inflammation-of-the-skin-or-a-rash-that-can-have-many-causes-it-is-a-sign-of-many-types-of-skin-disorder-j.webp)
Dermatitis yog lo lus dav dav uas piav txog kev ua rau tawv nqaij. Dermatitis yog ib yam mob uas muaj ntau yam ua rau thiab tshwm sim ntau yam. Nws feem ntau yog khaus, tawv nqaij qhuav los yog pob khaus ntawm daim tawv nqaij o, reddened
Npaum li cas ntawm daim tawv nqaij thiab daim tawv nqaij?
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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.
Kev npaj ntawm daim tawv nqaij yog dab tsi?
![Kev npaj ntawm daim tawv nqaij yog dab tsi? Kev npaj ntawm daim tawv nqaij yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14159571-what-is-surgical-skin-preparation-j.webp)
Qhov chaw phais phais yog hais txog kev kho mob ua ntej ntawm daim tawv nqaij tsis huv ntawm tus neeg mob. hauv chav ua haujlwm. Kev npaj suav nrog tsis yog qhov chaw tam sim ntawd ntawm qhov npaj. phais incision, tab sis kuj ib tug dav cheeb tsam ntawm tus neeg mob daim tawv nqaij, thiab feem ntau yuav siv qhov chaw thaum lub