Tej nqaij

Nqaij muab lub cev muaj zog tshuaj nyob rau hauv lub cev. Qhov no yog vim nws muaj peev xwm excitation thiab contraction. Raws li lub hom tsev nws yog tus, striated, skeletal thiab lub plawv.

Muaj pes tsawg leeg ntawm du nqaij muaj xws li mononuclear hlwb (ntxaiv-zoo li tus myocytes). Lawv ntev yog nruab nrab ntawm nees nkaum thiab tsib puas microns. Qhov no tej nqaij tsiag ntawv los ntawm muaj peev xwm mus ua ntawv cog lus thiab so kom txaus maj mam. Nws kev ua ub no tsis tuaj yeem. Nws yog siv rau hauv lub phab ntsa ntawm cov qog thiab cov hlab ntsha, raws li zoo raws li alimentary huam thiab mob txeeb zig.

Striated nqaij muaj xws li skeletal polynuclear (mus txog ib puas los yog ntau tshaj nuclei) myocytes loj (ob peb centimeters) ntawm qhov ntev thiab txoj kab uas hla ntawm qhov kev txiav txim ntawm ib tug micron. Nws me me qauv yog ib tug alternation ntawm lub teeb thiab tsaus bands. Qhov no cov ntaub so ntswg muaj ib tug high nqi ntawm so thiab contraction. Nws muaj nyob rau hauv lub skeletal leeg, lub caj pas thiab lub txoj hlab nqos mov. Nws ua si yog arbitrary (tswj neeg).

Striated nqaij plawv muaj ib tug multi-core hlwb (cardiomyocytes). Lawv tsim ib tug branched qauv rau lub tebchaw (intercalary disks), qhov chaw uas lub union ntawm lawv cytoplasm tshwm sim. Qhov no ntaub yog tsim ib lub plawv myocardium. Nws lub ntsiab zog muaj peev xwm mus so kom txaus thiab daim ntawv cog lus rhythmically tshwm sim nyob rau hauv cov nyhuv ntawm excitation nyob rau hauv lub hlwb. Cov kev ua ub no tsis yog tswj los ntawm tus txiv neej (tsis tuaj yeem).

nqaij mos puas yuav ua tau qhib (lub qhov txhab) los yog raug kaw. Raws li lub hom tshwm sim txawv ntawm compression, pob txha lov, sprains thiab doog. Nyob rau hauv lub caij ntuj no, raws li ib tug txoj cai, muaj kaw kev puas tsuaj. Qhov no yog vim muaj ib tug loj tus naj npawb ntawm ncos. Thaum kaw daim tawv nqaij puas tsuaj pathological center feem yog tau muaj kev ntseeg siab. Qhov no, nyob rau hauv lem, tiv thaiv lub nkag mus ntawm micro-kab nyob rau hauv lub cheeb tsam cov thiab cov kev loj hlob purulent (nyob rau hauv tej rooj plaub, mob) kab mob.

Qhov ua rau ntawm qhov kev raug mob yog ib tug sai thiab nraum nyhuv ntawm ib tug blunt cim rau tej cheeb tsam ntawm lub cev. Thaum zoo li no mechanism ntawm qhov raug yuav ua tau blunt quab yuam poob plig los sis poob siab rau nws.

Qhov ua rau ntawm stretch ntaub yog tej yam nyob rau hauv nws ob rog qhia nyob rau hauv lub rov qab sab ntawm nws. Nyob rau hauv cov ntaub ntawv no muaj yog tsis muaj ua txhaum ntawm nws anatomical laaj. Feem ntau, ncab ib ce hnyav ncawv raug ligaments nyob ze cov pob qij txha.

Yog hais tias ib tug muaj zog ncab cov ntaub so ntswg yog nws rupture. Nyob rau hauv cov ntaub ntawv no muaj ib tug ua txhaum ntawm nws anatomical laaj.

Compartment syndrome yog txhais raws li pathologically loj mob. Yog vim li cas rau nws tshwm sim yog kaw kev puas tsuaj heev uas nws kim heev nqaij mos qhov chaw raug siab txhua yam rog acting, nyob rau hauv tej rooj plaub, rau ib ntev lub sij hawm. Qhov xwm ntawm tus raug mob nyob rau hauv cov ntaub ntawv no tej zaum yuav txawv.

Nqaij mos necrosis tshwm sim nyob rau hauv tus neeg mob ntawm ua txhaum cai los yog txiav ntawm lawv lub hwj chim, raws li ib tug tshwm sim ntawm compression los yog kev puas tsuaj rau lub noj cov hlab ntsha. Feem ntau, nws nrhiav kom tau thiab nws thaj tsam yuav ncaj qha mus rau qhov chaw ntawm daim tawv nqaij mob. Kev ua txhaum los yog cessation ntawm noj cov ntaub so ntswg ntawm lub qhov txhab ntug yuav tau them rau incorrectly txiav los xij, muaj zog tawv nqaij puas tsuaj los yog technically kev suture.

Necrosis thaum lub sij hawm thawj hnub ntawm lub zoo los yog muaj hauv daim ntawv ntawm daj ntseg xiavlus daim tawv nqaij qhov chaw. Maj mam, lawv xim puv xim av. necrosis ntawm daim tawv nqaij yuav tsum tau khaws cia qhuav. Yuav tsum tsis txhob yuav ntxov ntxov mus tshem tawm cov lawv kiag li, raws li lawv ua tau cov kev ua ntawm muaj menyuam tsis taus bandages. Nyob rau hauv cov kev tshwm sim ntawm ntub necrosis lawv yuav tsum tau muab tshem tawm sai li sai tau los mus tiv thaiv lub tsim ntawm sib sib zog nqus purulent accumulations.