Tsarin muscular: rarrabuwa da nau'ikan tsokoki

Wadatacce

• Rarraba tsokoki
• Nau'o'in tsoka
• 1. Tsokar zuciya
• 2. Tsoka mai taushi
• 3. Tsokar kwarangwal

Tsarin tsoka ya dace da saitin tsokoki da ke cikin jiki wanda ke ba da izinin motsawa, da kuma ba da tabbaci ga daidaitawa, daidaitawa da goyan bayan jiki. An samar da tsokoki ta hanyar saitin zaren tsoka, myofibrils, waɗanda aka tsara su cikin daure kuma kewaye da nama.

Tsokoki suna iya yin motsi na raguwa da annashuwa kuma wannan shine abin da ke fifita ayyukan motsi na yau da kullun, kamar tafiya, gudu, tsalle, zaune, ban da wasu waɗanda ke da mahimmanci don aikin jiki daidai, kamar motsi, jini, numfashi da aiwatar da narkewa.

Rarraba tsokoki

Ana iya rarraba tsokoki yadda ya kamata bisa ga tsarinsu, aikinsu da halayensu na raguwa. Dangane da halayen haɓaka, tsokoki na iya zama:

• Yan agaji, lokacin da ke tattare da kwangilarta ta tsarin mai juyayi, wanda sha'awar mutum ke shafar sa;
• Ba da son rai ba, wanda raguwa da shakatawa na tsoka bai dogara da nufin mutum ba, yana faruwa a kai a kai, kamar yadda ya shafi tsokar zuciya da tsoka da ke cikin hanji wanda ke ba da damar motsin peristaltic, misali.

Dangane da aikin su, ana iya sanya su cikin:

• Agonists, wanda ke kwangila tare da makasudin samar da motsi;
• Masu haɗa kai, wanda ke kwangila a cikin hanya ɗaya tare da masu tayar da hankali, yana taimakawa wajen samar da motsi;
• Masu adawa, wadanda ke adawa da motsin da ake so, ma'ana, yayin da tsokoki na agonist ke haifar da motsin ragi, masu adawa suna inganta hutu da mikewa na tsoka a hankali, suna barin motsin ya faru ta hanyar hadewa.

Bugu da ƙari, bisa ga halaye na tsarin, ana iya rarraba tsokoki a matsayin mai santsi, kwarangwal da zuciya. Wadannan tsokoki suna aiki kai tsaye tare da tsarin juyayi don ba da damar motsi ya faru ta hanyar da ta dace.

Nau'o'in tsoka

Dangane da tsarin, ana iya rarraba tsokar nama zuwa nau'uka daban-daban guda uku:

1. Tsokar zuciya

Tsokar zuciya, wacce ake kira myocardium, ita ce tsokar da ta rufe zuciya kuma ta ba da izinin motsin wannan gabar, yana fifita jigilar jini da iskar oxygen zuwa wasu sassan jiki da kyallen takarda, yana kiyaye yadda ya kamata na jiki.

An rarraba wannan tsoka a matsayin ba da son rai ba, saboda ana yin aikinta ba tare da la'akari da sha'awar mutum ba. Bugu da kari, tana da fare-fare, wanda kuma ana iya kiranta bugun zuciya, kuma ya ƙunshi ƙwayoyin rai masu tsayi da ƙwanƙwasa waɗanda ke kwangila da ƙarfi da ƙarfi.

2. Tsoka mai taushi

Irin wannan tsoka tana da rashi jinkiri da jinkiri kuma ana iya samunsa a bangon gabobin da ba su da ciki kamar tsarin narkewar abinci, mafitsara da jijiya, misali. Ba kamar ƙwayar zuciya ba, wannan tsoka ba ta da wata hanya kuma, saboda haka, ana kiranta da santsi.

3. Tsokar kwarangwal

Tsokar kwarangwal ita ma nau'ikan tsoka ce mai rauni, duk da cewa ba kamar sauran nau'ikan tsokoki ba, tana da rashi na son rai, ma'ana, don motsi ya faru, dole ne mutum ya ba da wannan sigina don tsokar ta murɗe. Irin wannan tsoka an haɗa ta da ƙasusuwa ta cikin jijiyoyi, yana ba da damar motsin tsokokin hannu, ƙafafu da hannaye, misali.