Tsim, Secondary kev kawm ntawv thiab cov tsev kawm ntawv

Yuav ua li cas yog qhov tseem ceeb ntawm lub digestive system: ib qho tseem ceeb cov lus teb

Nyob rau hauv lub neej txhua hnub, cov neeg tsis tshua them xim rau cov digestive system, uas raug nqi ntau tsis tau tsuas yog tus ntsais teeb ntawm koj lub cev, tab sis kuj cov nqe lus ntawm yog vim li cas, tsis sim mus xyuas seb dab tsi yog lub ntsiab lus ntawm lub digestive system los noj qab nyob zoo. Tsis txaus los yog ntev li ntawm nqi ntawm khoom noj khoom haus, raws li zoo raws li nws cov muaj pes tsawg leeg - tag nrho cov no muaj feem xyuam rau ib qhov ntawm cov tseem ceeb tshaj plaws systems nyob rau hauv tib neeg lub cev.

Plab zom mov pib nyob rau hauv lub qhov ncauj

Sim piav qhia li cas rau lub ntsiab lus ntawm lub digestive system, nws yog tsim nyog los taw tes tawm ib zaug hais tias tus digestive txheej txheem pib sai li sai tau raws li ib daim ncuav mog qab zib los yog zaub pob qe tau rau hauv ib tug neeg lub qhov ncauj. Ib tug loj tus naj npawb ntawm cov qog uas tsim qaub ncaug, nws yog nyob rau hauv lub qhov ncauj kab noj hniav. Hais tias cov qaub ncaug tiv thaiv cov hniav enamel, kom ntseeg tau sib xws ntawm nws cov muaj pes tsawg leeg. Nyob rau hauv tas li ntawd, ntxuav tag nrho cov kab noj hniav, cov qaub ncaug muab tua, yog ib tug natural, tab sis yog tsis muaj zog tshuaj tua kab mob. Cov qaub ncaug ua me me ntawm calcium, uas pub tau mov rau cov hniav enamel.

Nws yog ib nqi hais tias cov qaub ncaug yog ua xwb nyob rau hauv lub nruab hnub, thiab ces thaum hmo ntuj cov kab mob muaj tag nrho cov muaj feem yuav ua tau kom lawv cov pejxeem. Uas yog vim li cas nws yog ib qho tseem ceeb txhuam hniav hniav - thaum sawv ntxov thiab yav tsaus ntuj.

Txoj hlab nqos mov thiab plab hnyuv raj

Chewed zaub mov, fermentation thiab kev zom uas twb pib nyob rau hauv lub qhov ncauj tom qab nqos nkag mus rau hauv txoj hlab nqos mov. Cov kab uas hla ntawm lub raj nquag yog hais txog 2 centimeters.

Bolus los ntawm cov hlab pas mus rau hauv lub plab, lub hnab muaj ib tug zoo nkauj txhua qhov zoo nrog oblique nqaws. Nws yog situated nyob rau hauv ib tug kab pheeb ces kaum ntawm sab laug mus rau sab xis, thaum lub sij hawm sab laug yog ho siab tshaj txoj cai.

Tam sim ntawd tom qab lub plab pib me me hnyuv, positioned nyob rau hauv teeb meem nyob rau hauv lub plab mog. Qhov ntev ntawm lub lub cev nce mus txog xya meters. Nws yog nyob rau hauv cov hnyuv tshwm sim feem ntau cov tseem ceeb - lub assimilation ntawm mineral hais, uas absorbs neeg. Dhau li nws amazing ntev, nws kuj yog ib tug lossis loj cheeb tsam. Tom qab txhua txhua millimeter plab hnyuv villi coated nyias, thiab nyob rau hauv uas cov kev pauv ntawm tshuaj yuav siv sij hawm qhov chaw. Yog hais tias cov villi yog straightened, cov hnyuv yuav tau nce los ntawm qhov ntev ntawm ob thiab ib tug ib nrab sij hawm. Nws yog vim hais tias ntawm plab hnyuv cov as-ham rau hauv cov ntshav, vim hais tias nyob rau hauv txhua villus muaj cov hlab ntsha. Qhov no coj peb los nyob ze rau ib tug to taub txog dab tsi yog lub ntsiab lus ntawm lub digestive system.

Biology: Grade 6

Lub sab sauv seem ntawm cov hnyuv yog muaj menyuam tsis taus, thaum nyob rau hauv lub plab thiab txo qhov ntawm cov nyuv nyob rau hauv loj qhov ntau muaj ntau hom kab mob los pab digestion. Niaj hnub nimno science yog zoo paub hais tias npaum li cas ntawm lub cev yog feeb meej nyob rau hauv lub plab thiab lub xeev ntawm cov microflora ntawm cov feem ntau feem rau tib neeg noj qab haus huv.

Tej zaum txawm tias ib tug schoolboy yuav tsum paub cov lus teb rau ib lo lus nug hais tias peb xav nyob rau hauv no tsab xov xwm. Namely: "Yuav ua li cas yog lub ntsiab lus ntawm lub digestive system?" (Qib 6). Sixth voom yuav tsum muaj kev to taub ntawm nws cov qauv, raws li zoo raws li lub fact tias cov system yog tag nrho ntawm cov hlab txoj, qog uas tsim enzymes thiab cov tshuaj hormones, txhua yam uas yog ib qho tseem ceeb rau kev kho mob.