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Imisebenzi ye-bushelelezi kwemisipha izicubu. Smooth kwemisipha izicubu: isakhiwo
Indwangu - iqoqo efanayo cell isakhiwo, okuyinto ukwabelana izici ezivamile. Cishe bonke eziphilayo ezinamangqamuzana amaningi akhiwa izinhlobo ezahlukene kwezicubu.
ngezigaba
Ezilwaneni nakubantu abakhona emzimbeni elandelayo izicubu izinhlobo:
- EPITHELIAL;
- kwemizwa;
- kuhlangana;
- imisipha.
La maqembu yahlanganiswa izinhlobo eziningana. Ngakho, i- ezicutshini fat, uqwanga, ithambo. Lihlanganisa igazi lymph. izicubu EPITHELIAL kukhona owodwa ungqimba ne-multi-ungqimba, kuye isakhiwo amaseli kungabuye isehlane flat, cubic, epithelium cylindrical, nokunye. D. Nervous kuyinto ohlobo olulodwa kuphela. Uhlobo kwemisipha izicubu kuzoxoxwa kabanzi kulesi sihloko.
Izinhlobo kwemisipha izicubu
Emzimbeni kuzo zonke izilwane secrete izinhlobo zayo ezintathu:
- imisipha bushelelezi;
- striated imisipha;
- inhliziyo kwemisipha izicubu.
Imisebenzi ye- bushelelezi kwemisipha izicubu azisafani we striated futhi inhliziyo, ngakho yena isakhiwo. Ake sihlole kabanzi ukwakheka uhlobo umsipha ngamunye.
izici Jikelele kwemisipha izicubu
Njengoba zonke izinto ezintathu ezinganembile uhlobo olufanayo, banayo kuningi abafana ngakho.
Imisipha abizwa ngokuthi myocytes, noma zesivikelo sesifuba. Kuye ezihlukahlukene kwezicubu, bangase babe isakhiwo ezahlukene.
Imisipha izicubu, izithombe zazo kungabonwa ngezansi, has cishe akukho izidakamizwa intercellular.
Esinye isici ezivamile zonke izinhlobo imisipha ngukutsi zingancishiswa, Nokho, e zinhlobo ezahlukene, le nqubo kwenzeka ngabanye.
Izici myocytes
Amaseli bushelelezi kwemisipha izicubu, efana striated futhi inhliziyo babe ukuma side. Ngaphezu kwalokho, banalo organelles ekhethekile okuthiwa myofibrils, noma myofilaments. Ziqukethe amaprotheni contractile (actin, myosin). Ziyakwazi kudingekile ukuze kube nesiqiniseko ukunyakaza kwemisipha. Imfuneko imisipha ukusebenza, ngaphandle ebusweni amaprotheni contractile, kubuye khona calcium ion kumaseli. Ngakho-ke, ukusetshenziswa asanele noma ngokweqile ukudla nge wokuqukethwe lelisetulu kwalesi sakhi kungadala ukungasebenzi kwemisipha - kokubili bushelelezi futhi striated.
Ngaphezu kwalokho, amangqamuzana okhona amaprotheni ethize - myoglobin. Kuyadingeka ukuxhumana oksijini bese uwabeka.
Ngokuphathelene organelles, ngaphandle ebusweni myofibrillar esikhethekile kwemisipha izicubu okuqukethwe kuba inqwaba mitochondria kuseli - dvumembrannyh organelles obhekene kwezimila yeselula. Lokhu akusona isimanga, njengoba fibre imisipha ukunciphisa semali amandla kumelwe lekufanele akhicitwe nakuchubeka kwezimila e mitochondria.
Kwezinye myocytes sikhona ezingaphezu kweyodwa core. Lena isici striated imisipha amaseli ingaqukatha cores mayelana amabili, futhi ngezinye izikhathi lesi sibalo ufinyelela eziyikhulu. Lokhu kungenxa yokuthi kwakheka fibre kwemisipha striated is lamaseli eziningana ke kuhlangene zibe munye.
Isakhiwo imisipha striated
Lolu hlobo lwe-ndwangu ngokuthi imisipha yohlaka. Ukotini Wekhethelo yalolu hlobo of kwemisipha obuphelele, eqoqwe ku izinyanda. La mangqamuzana kungenzeka ngamasentimitha ambalwa eside (kufika ku 10-12). Ziqukethe nuclei eziningi, mitochondria futhi myofibrils. Uhlelo oluyisisekelo oluthi iyunithi isakhi myofibril kwezicubu striated ngamunye - sarcomere. Siqukethe amaprotheni contractile.
Isici esiyinhloko lokhu imisipha ukuthi zingalawulwa uyaqaphela, ngokungafani kuya bushelelezi futhi inhliziyo.
Le micu lendwangu anamekwe amathambo nge imisipha. Yingakho lezi zibizwa ngokuthi imisipha yohlaka kanye.
Sakhiwo bushelelezi kwemisipha izicubu
imisipha Smooth abami ezinye izitho zangaphakathi ezifana amathumbu, kwesibeletho, isinye, futhi imithambo yegazi. Ngaphezu kwalokho, bakha sphincters nemisipha.
Smooth imisipha fibre akuyona nje le striated. Kodwa Uhlonze lwalo mkhulu kunezinhliziyo esimweni imisipha yohlaka. Amaseli bushelelezi kwemisipha izicubu babe veretonopodobnoy ifomu kunokuba filamentary njengoba myocytes striated.
Izakhiwo ukuthi obesechivayut bushelelezi imisipha, ngokuthi protofibrils. Ngokungafani myofibrils, banayo isakhiwo elula. Kodwa okubalulekile okuvela ngazo eyakhelwe - namaprotheni efanayo contractile actin futhi myosin.
Mitochondria e myocytes imisipha bushelelezi futhi esingaphansi emangqamuzaneni striated futhi inhliziyo. Ngaphezu kwalokho, ziqukethe nucleus eyodwa kuphela.
Izici imisipha yenhliziyo
Abanye abacwaningi bakuchaza ngokuthi i zenyathi striated kwemisipha izicubu. fibre wabo ngempela okuningi ngokufanayo. inhliziyo amaseli - cardiomyocytes - aqukethe cores amaningi, inani elikhulu myofibrils futhi mitochondria. Lokhu Indwangu, kanye kwemisipha lwamathambo, uyakwazi zingancishiswa isheshe futhi kunamandla imisipha abushelelezi.
Nokho, isici esiyinhloko evelela imisipha yenhliziyo kusukela striated, ukuthi ayikwazi ukulawulwa uyaqaphela. Ukwehlisa kuphela kwenzeka ngokuzenzakalela, njengoba kwaba njalo endabeni ka-imisipha abushelelezi.
Njengengxenye ye-nezicubu inhliziyo, ngaphezu amaseli ejwayelekile Zikhona cardiomyocytes secretory. Awaqukathi myofibrils futhi kungukuthi encishisiwe. La mangqamuzana atriopeptina otvesayut ukuze ukukhiqizwa hormone, okuyinto ebalulekile ukulawulwa blood pressure kanye nokulawula umthamo wegazi.
Umsebenzi kwemisipha striated
Umsebenti wabo oyinhloko - ukuhambisa umzimba emkhathini. Libuye libe ukunyakazisa izitho zomzimba isihlobo komunye nomunye.
Phakathi kwezinye imisebenzi ingase imisipha striated waphawula nokugcina amanzi postures edepho nosawoti. Ngaphezu kwalokho, ukukhonza abavikeli, ikakhulukazi maqondana imisipha besisu ukuvimbela umonakalo mechanical kuya izitho zangaphakathi.
Imisebenzi kungabuye ukubalwa phakathi ukulawulwa lokushisa ezicutshini striated, njengoba kwenzeka ukuvela ukushisa elikhulu ukusikwa asebenzayo kwemisipha. Yingakho lapho izicubu peremerzanii baqala ukuthuthumela ngenxa yezimo abhekene.
Imisebenzi ye-bushelelezi kwemisipha izicubu
Ezicutshini yalolu hlobo wenza abantu baphume umsebenzi. Ihlala e yokuthi imisipha abushelelezi emathunjini ibenze sezinyawo kule ndawo ukuqedwa kwabo kusuka emzimbeni. Futhi, lokhu indima kubonakala lapho ezalwa lapho imisipha abushelelezi kwesibeletho push isithelo emzimbeni.
Imisebenzi ye-bushelelezi kwemisipha izicubu akuzona elinganiselwe. Futhi kuyingxenye ebalulekile sphincter yabo. Indwangu yalolu hlobo akhiwa imisipha ekhethekile isiyingi ezingaba occlude futhi evulekile. Sphincters zikhona ngomgudu womchamo, esiswini, phakathi isisu emphinjeni, nenyongo sesinye, e umfundi.
Enye indima ebalulekile kwemisipha bushelelezi - kumiswa apharathasi ligamentous. Kuyadingeka ukuba silondoloze ukuma efanele izitho zangaphakathi. Ngu ukwehlisa ithoni le misipha prolapse kwezinye izitho singenzeka.
Ngalesi umsebenzi bushelelezi imisipha sekupheleni.
Injongo imisipha yenhliziyo
Lapha, isimiso, akukho ekhethekile ukusho. Umsebenzi oyinhloko kanye kuphela lokhu izicubu - ukuhlinzeka kwegazi igazi emzimbeni.
Isiphetho: Umahluko phakathi izinhlobo ezintathu kwemisipha izicubu
Ukuze ukuvezwa udaba sethula itafula:
imisipha bushelelezi | imisipha Cross-striated | Senhliziyo esilimele izicubu |
encishisiwe ngokuzenzakalelayo | It zingalawulwa uyaqaphela | encishisiwe ngokuzenzakalelayo |
Amaseli ukunwebeka, veretenopodobnye | Amaseli made, asamicwana | iseli ukunwebeka |
Le micu kungukuthi uquqaba zibe izinyanda | Le micu ehlangana ku izinyanda | Le micu ehlangana ku izinyanda |
Omunye nucleus kuseli | nuclei eziningana kuseli | nuclei eziningana kuseli |
Inani elincani mitochondria | Inani elikhulu mitochondria | |
kungekho myofibrils | khona myofibrils | khona myofibrils |
Amaseli ikwazi ukuhlanganyela | Le micu akakwazi ukuba ahlukaniswe | Amaseli ayikwazi ukuhlukanisa |
Ukwenqaba kancane, kancane, atishaye | Sika iyashesha, qinile | Incipha ngokushesha, eqinile, atishaye |
Lining yezitho zangaphakathi (amathumbu, kwesibeletho, isinye) ifomu sphincters | Banamathele skeleton | yakha inhliziyo |
Yiyo yonke izici eziyisisekelo striated, bushelelezi futhi inhliziyo kwemisipha izicubu. Manje wena ujwayelene imisebenzi yabo, isakhiwo, futhi umehluko oyinhloko ngazo nezinto ezifana ngazo.
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