Cov txheej txheem:
Video: Cov theem twg ntawm lub voj voog ntawm tes yog lub xov tooj cua tshaj plaws?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov cell voj voog theem kuj txiav txim siab a cov cell txheeb ze hluav taws xob , nrog hlwb ua feem ntau radiosensitive hauv G2-M theem , tsis tshua nkag siab hauv G.1 theem , thiab tsawg kawg nkag siab thaum kawg ntawm S theem.
Kuj tseem yuav paub yog, theem twg ntawm lub voj voog ntawm tes yog qhov nkag siab tshaj plaws rau hluav taws xob?
Xovtooj nyob rau hauv lig G2 thiab mitosis (M- theem ) yog cov feem ntau rhiab rau hluav taws xob , thiab hlwb nyob rau hauv lig synthesis (S- theem ) yog cov feem ntau resistant (Fig. 23.10).
Ib yam nkaus, hom xov tooj ntawm tes twg yog xov tooj cua tshaj plaws? Nruab nrab ntawm lub cev hlwb , cov feem ntau rhiab heev yog spermatogonia thiab erythroblasts, qia epidermal hlwb , plab hnyuv qia hlwb . Cov tsawg kawg rhiab yog paj hlwb hlwb thiab cov leeg nqaij.
Qhov thib ob, qhov twg theem ntawm mitosis yog radiosensitive tshaj?
Kev siv hluav taws xob ntau ntawm cov cell nthuav dav sib txawv nrog theem ntawm lub voj voog ntawm tes
- Feem ntau cov qib hluav taws xob: G2-theem thiab mitosis (M-theem)
- Tsawg radiosensitive theem: tom kawg ntawm S-theem (synthesis ntawm DNA)
Dab tsi ntawm cov cell uas rhiab tshaj plaws rau kev puas tsuaj hluav taws xob?
Lymphocytes yog ntshav dawb lossis tsis muaj xim hlwb tau los ntawm cov ntaub so ntswg lymphatic. Vim lawv ceev ntawm tes kev faib lawv muaj kev cuam tshuam ntau dua rau kev cuam tshuam ntawm hluav taws xob . Radiosensitivity cuam tshuam los ntawm cov pa oxygen hauv cov ntaub so ntswg.
Pom zoo:
Nyob rau theem twg ntawm viral lub neej voj voog yuav tus kab mob tau txais nws lub hnab ntawv?
Nrog cov kab mob hauv lub hnab ntawv, tus tswv tsev yuav yog lossis tsis tuaj yeem lysed. Cov kab mob tau txais lawv lub hnab ntawv los ntawm tus tswv tsev cell daim nyias nyias los ntawm kev tawg paj. Raws li tau hais los saud, ua ntej yuav tawg paj, cov kab mob kis tau thiab cov glycoproteins tau muab tso rau hauv tus tswv tsev lub cell daim nyias nyias
Dab tsi yog qhov chaw kuaj xyuas tseem ceeb tshaj plaws hauv lub voj voog ntawm tes?
G1 lub chaw kuaj xyuas tseem ceeb tshaj plaws yog lub xovtooj ntawm tes
Lub koom haum ntawm cov leeg pob txha los ntawm qhov tsawg tshaj plaws mus rau qhov loj tshaj plaws yog dab tsi?
Skeletal thiab cardiac nqaij fibers. Npaj cov leeg hauv qab no los ntawm qhov tsawg tshaj plaws mus rau qhov loj tshaj plaws: nqaij fiber ntau, fascicle, myofibril, filament, nqaij. Npaj cov nqaij mos sib txuas hauv qab no los ntawm qhov tsawg tshaj plaws mus rau qhov loj tshaj: epimysium, perimysium, fascia, endomysium. cov sarcomere
Lub cev twg yog lub xov tooj cua tshaj plaws?
Cov noob qes
Muaj sijhawm ntau npaum li cas hauv txhua theem ntawm lub voj voog ntawm tes?
Feem ntau, cov cell yuav siv sijhawm li 5 txog 6 teev kom tiav S theem. G2 yog luv dua, kav ntev li 3 txog 4 teev hauv feem ntau ntawm cov cell. Nyob rau hauv tag nrho, ces, interphase feem ntau siv sijhawm ntawm 18 txog 20 teev. Mitosis, thaum lub sij hawm lub cell ua rau kev npaj rau thiab ua kom tiav cell faib tsuas yog siv li 2 teev