Imisebenzi kwemisipha izicubu kanye nesakhiwo izinhlobo

NgoLwesine kutholakale isidumbu sendoda zonke izilwane, kuhlanganise nabantu, yakhiwa izinhlobo ezine izicubu: EPITHELIAL, kwemizwa, zezinzwa futhi kwemisipha. On the yokugcina uzobe okuxoxwe ngazo kulesi sihloko.

Okunhlobonhlobo kwemisipha izicubu

Kuyinto ezintathu izinhlobo:

• striated;
• bushelelezi;
• inhliziyo.

Imisebenzi ijwabu imisipha zinhlobo ezahlukene ziyahluka kancane. Futhi isakhiwo kakhulu.

Baphi izicubu imisipha yomzimba womuntu?

Imisipha izicubu zinhlobo ezahlukene luthathe indawo ehlukile emzimbeni bezilwane nabantu. Ngakho, kuzo imisipha yenhliziyo, njengoba leli gama lisikisela, yakhelwe inhliziyo.

Kusukela striated imisipha yohlaka kwakhiwa kwemisipha izicubu.

imisipha Smooth agudle ingaphakathi ngaphakathi, okumele encishisiwe. Lokhu, isibonelo, amathumbu, kwesinye, kwesibeletho, isisu, njll

imisipha isakhiwo zinhlobo ezahlukene kuyehluka. On inkulumo yakhe kabanzi ngokulandelayo.

Kanjani nezicubu imisipha?

Siqukethe amaseli wosayizi omkhulu - imisipha amaseli. Futhi zibizwa futhi ngokuthi fibre. Imisipha amaseli ifa multi-core futhi abaningi mitochondria - organelles ababenyathelisa amandla.

Ngaphezu kwalokho, isakhiwo imisipha kwezicubu womuntu nezilwane kuhilela khona esincane intercellular izidakamizwa equkethe i-collagen, onikeza imisipha kuyaqina.

Ake sibheke isakhiwo kanye umsebenzi ijwabu imisipha zinhlobo ezahlukene ngokwehlukile.

Sakhiwo indima bushelelezi kwemisipha izicubu

Lokhu Indwangu ilawulwa autonomic nesimiso sezinzwa. Ngakho-ke, umuntu akakwazi ukunciphisa imisipha uyaqaphela zakhiwa Indwangu bushelelezi.

Kumiswa It is kusukela mesenchyme. Kuyinto uhlobo embryonic ezicutshini.

Yehlisa lokhu izicubu iyasebenza ingasaphathwa futhi ngokushesha kuka striated.

Hlelemba le ndwangu zakhiwe myocytes fusiform Umumo imikhawulo ezicijile. Ubude la mangqamuzana kungenzeka kusukela micrometer 100 500, kanye ukushuba - kwengu- 10 micrometer. Amaseli ijwabu kukhona mononuclear. I-nucleus itholakala maphakathi myocyte. Ngaphezu kwalokho, evuthiwe organelles ezifana mitochondria kanye EPS agranular. Futhi kule imisipha bushelelezi izicubu amaseli inqwaba glycogen inclusions, okuyinto bakha izinqolobane izakhamzimba.

I element enikezela zokunciphisa kwemisipha izicubu kwezinhlobo, kukhona myofilaments. Abakwazi zakhiwe amaprotheni amabili contractile actin futhi myosin. Ububanzi myofilaments aqukethe myosin, kuyinto 17 nanometer, futhi lezo zakhiwe ngezingodo actin - 7 nanometer. Kukhona futhi myofilaments Lesisemkhatsini kabani ubukhulu 10 nanometer. Umumo myofibrils longitudinal.

Isakhiwo lolu hlobo kwemisipha izicubu sihlanganisa -matrix extracellular collagen, esihlinzeka ukuxhumana phakathi myocytes ngabanye.

Imisebenzi ijwabu imisipha yalolu hlobo:

• Sphincter. Ingabe ka bushelelezi kwemisipha izicubu kuhlelwe ngendlela isiyingi olawula okuqukethwe umzimba inguqulelo komunye noma kusuka kwenye ingxenye yomzimba kwenye.
• Ukuthuthwa kwabantu ngenxa yengozi. Ihlala e yokuthi imisipha bushelelezi asize umzimba unekhemikhali udoti, kanye iqhaza enqubeni bokubeletha.
• Ukudala inesikhala semithambo.
• Kumiswa apharathasi ligamentous. Siyabonga kuye, izitho eziningi, ezifana izinso, aphethwe endaweni.

Manje ake sibheke indlela kwemisipha izicubu.

Striated

Lulawulwa le ukuphathwa kwabathintwayo isimiso sezinzwa. Ngakho-ke, umuntu angakwazi uyaqaphela lokulawula lolu hlobo kwemisipha. Kusukela kwakheka striated lwamathambo kwemisipha izicubu is.

Lokhu izicubu siqukethe imicu. Lawa amaseli okuyinto abe sebuningini cores ngokufanele eduze ulwelwesi plasma. Ngaphezu kwalokho, ziqukethe esiningi glycogen inclusions. Evuthiwe organelles ezifana mitochondria. Ziyakwazi eduze contractile amaseli izici. Zonke ezinye organelles zitholakala eduze nuclei nengenawo athuthukile.

Izakhiwo lapho Indwangu cross-ezimthende kuyehla, kukhona myofibrils. ubukhulu wabo phakathi no ezimbili micrometer. Myofibrils hlala iningi esitokisini futhi afakwe phakathi nendawo. Umumo myofibrils longitudinal. Basuke yakhiwa ukukhanya amadiski amnyama, kushintshana, okuyinto kudala engu- "omthende" indwangu.

Imisebenzi ijwabu imisipha yalolu hlobo:

• Nikeza emzimbeni ezihambayo emkhathini.
• Lubhekele ukunyakaza izitho zomzimba isihlobo komunye nomunye.
• Ikhono alondoloze ngeqholo zomzimba.
• Angenele ukulawulwa lokushisa: encishisiwe imisipha asebenzayo, ayanda izinga lokushisa. Lapho umnkantsha imisipha striated ungaqala ukwenza inkontileka yezimo abhekene. Lokhu kuchaza ukuthuthumela umzimba.
• Khonza umsebenzi zokuzivikela. Lokhu kuyiqiniso ikakhulukazi of the imisipha besisu, esivikela izitho eziningi zangaphakathi ekulimaleni.
• Isinyathelo NjengoJesu idepho yamanzi kanye nosawoti.

Senhliziyo esilimele izicubu

Lokhu Indwangu kufana kokubili striated, futhi abushelelezi. Kanye bushelelezi, it is kulawulwa autonomic nesimiso sezinzwa. Nokho, sihlehlela ke njengoba ngenkuthalo njengomdala striated.

Siqukethe abizwa ngokuthi cardiomyocytes.

Imisebenzi ijwabu imisipha yalolu hlobo:

• Kuyinto eyodwa kuphela: ukuqinisekisa ukuhamba kwegazi ngomzimba.