Helminths nyob qhov twg?

Cov txheej txheem:

Helminths nyob qhov twg?
Helminths nyob qhov twg?
Anonim

Av- kis kab mob helminths nyob hauv txoj hnyuvthiab lawv cov qe tau dhau mus rau hauv cov quav ntawm cov neeg mob. Yog hais tias tus neeg muaj tus kab mob no defecations sab nraum (ze bushes, nyob rau hauv ib lub vaj, los yog teb) los yog cov quav ntawm tus kab mob no yog siv los ua chiv, qe yuav muab tso rau hauv av.

helminths feem ntau nyob qhov twg hauv tib neeg lub cev?

Cov qe nkag mus rau hauv tib neeg lub cev los ntawm qhov ncauj, qhov ntswg thiab qhov quav. Ib zaug hauv lub cev, cov qe helminth feem ntau nyob hauv cov hnyuv, hatch, loj hlob thiab ntau. Tej zaum lawv tuaj yeem kis tau rau lwm qhov chaw hauv lub cev.

helminths feem ntau nyob qhov twg?

Ntau tshaj 1.5 billion tus neeg, lossis 24% ntawm cov neeg hauv ntiaj teb, tau kis tus kabmob helminth hauv av thoob ntiaj teb. Cov kab mob kis tau dav dav hauv thaj chaw kub thiab kub kub, nrog cov neeg coob tshaj plaws tshwm sim hauv sub-Saharan Africa, Americas, Tuam Tshoj thiab East Asia.

Yuav ua li cas helminths nyob?

HABITAT OF HELMINTHS

Helminths yog cov kab mob parasitic (worms) uas, nyob ntawm hom, nyob hauv qhov chaw xws li lub plab lumen, cov ntshav, lossis cov leeg ntawm tus tswv tsev. Cov kab mob no colonize ntau tshaj ib feem peb ntawm cov pejxeem hauv ntiaj teb.

Puas yog helminths ciaj sia?

Helminths yog cov kab mob loj, ntau cov kab mob uas feem ntau pom ntawm qhov muag liab qab hauv lawv cov neeg laus. Zoo li protozoa, helminths tuaj yeem yog nyob dawb lossisparasitic in nature. Nyob rau hauv lawv daim ntawv laus, helminths tsis tuaj yeem ua rau tib neeg.

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