Mawallafi: Laura McKinney
Ranar Halitta: 3 Afrilu 2021
Sabuntawa: 22 Nuwamba 2024
Anonim
IN DAI MATSALAR RIKICEWAR AL’ADA CE TO GA SAHIHIN MAGANIN TSAMIYA DA GANYAN BAURE FISABILILLAH
Video: IN DAI MATSALAR RIKICEWAR AL’ADA CE TO GA SAHIHIN MAGANIN TSAMIYA DA GANYAN BAURE FISABILILLAH

Wadatacce

Tambayar yawan mahaɗa a jikin mutum yana da wahalar amsawa saboda ya dogara da yawan masu canji. Wannan ya hada da:

  • Ma'anar haɗin gwiwa. Wasu suna ayyana haɗin gwiwa azaman wurin da kasusuwa 2 suke haɗuwa. Wasu kuma suna ba da shawara cewa aya ce inda kasusuwa ke haɗuwa da manufar motsa sassan jiki.
  • Hada sesamoids. Sesamoids su ne ƙasusuwa da aka lika a jijiyoyi, amma ba a haɗa su da sauran ƙasusuwa ba. Patella (gwiwa) shine mafi girma sesamoid. Wadannan kasusuwa sun banbanta adadi daga mutum zuwa mutum.
  • Zamanin mutum. Jarirai suna farawa da kasusuwa kimanin 270. Wasu daga waɗannan kasusuwa suna haɗuwa tare yayin girma. Manya suna da ƙasusuwa kimanin 206, tare da 80 a cikin kwarangwal mai ƙarfi da 126 a cikin kwarangwal.

A takaice, babu tabbatacciyar amsa ga wannan tambayar. Adadin da aka kiyasta yana tsakanin 250 zuwa 350.


Na'urorin haɗin guda nawa ne a jikin mutum?

Jikin mutum yana da manyan nau'ikan haɗin gwiwa guda uku. An rarraba su ta hanyar motsi da suka yarda:

  • Synarthroses (mara motsi). Waɗannan an gyara su ko haɗin fibrous. An bayyana su azaman ƙasusuwa biyu ko sama da haka a cikin kusancin da ba shi da motsi. Kasusuwan kokon kai misali ne. Abubuwan haɗin da ba za a iya motsawa tsakanin faranti na kwanyar an san su da ɗamara ba.
  • Amphiarthroses (ɗan motsi). Har ila yau, an san shi da haɗin gwiwa, waɗannan haɗin an bayyana su azaman ƙasusuwa biyu ko sama waɗanda aka riƙe su sosai cewa iyakantaccen motsi ne kawai zai iya faruwa. Kashin baya na kashin baya misalai ne masu kyau.
  • Diarthroses (mai motsi kyauta). Hakanan an san shi da haɗin haɗin synovial, waɗannan haɗin suna da ruwan synovial wanda ke ba da damar dukkan ɓangarorin haɗin gwiwa don motsawa gaba da juna. Waɗannan su ne mafi yawan haɗuwa a cikin jikin ku. Misalan sun haɗa da haɗin gwiwa kamar gwiwa da kafaɗa.

Nau'in haɗuwa masu motsi da yardar kaina

Akwai nau'ikan nau'ikan mahaɗan diarthrosis guda shida masu motsi (synovial):


  • Kwallan da soket hadin gwiwa. Bada izinin motsi a kowane bangare, kwalliya da gwal din haɗin gwiwa suna nuna shugaban ƙashi ɗaya wanda yake zaune a cikin kofin wani ƙashi. Misalan sun hada da kafadar kafada da ta gwiwa.
  • Hinge hadin gwiwa Haɗin haɗin gwiwar yana kama da ƙofa, buɗewa da rufewa a cikin hanya ɗaya, tare da jirgin sama ɗaya. Misalan sun hada da gwiwar gwiwar ka da gwiwa.
  • Haɗin haɗin Condyloid Haɗin haɗin condyloid yana ba da izinin motsi, amma babu juyawa. Misalan sun haɗa da haɗin yatsan ka da hammatar ka.
  • Pivot haɗin gwiwa Jointawan pivot, wanda kuma ake kira haɗin juyi ko haɗin gwiwa, ana amfani da ƙashi ɗaya wanda zai iya juyawa a cikin zobe wanda aka samo daga ƙashi na biyu. Misalan su ne mahaɗan tsakanin ulna da kasusuwa na radius da ke juya gabanka, da kuma haɗin gwiwa tsakanin ƙashin farko da na biyu a wuyanka.
  • Haɗa gwal Ana kuma kiran haɗin gwal da haɗuwa da jirgin sama. Kodayake yana ba da izinin iyakantaccen motsi ne kawai, yana da halin santsi wanda zai iya zamewa akan juna. Misali shine haɗin gwiwa a wuyan hannu.
  • Sirdi hadin gwiwa Kodayake haɗin sirdin ba ya bada izinin juyawa, yana ba da damar motsi gaba da gaba da kuma gefe zuwa gefe. Misali shine haɗin gwiwa a ƙasan babban yatsanka.

Awauki

Tsarin kasusuwa na mutumtaka yana da hadadden gini wanda ya hada da kasusuwa 206 masu suna wadanda suka hada da guringuntsi, jijiyoyi, jijiyoyi, da nau'ikan mahadi guda uku:


  • synarthroses (mara motsi)
  • amphiarthroses (dan motsi)
  • diarthroses (mai motsi kyauta)

Kodayake ainihin adadin haɗin gwiwa a cikin kowane mutum ya dogara da adadin masu canji, adadin da aka kiyasta yana tsakanin 250 zuwa 350.

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