Cov txheej txheem:
Video: Phagocytosis yog dab tsi thiab nws ua haujlwm li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Phagocytosis yog qhov engulfing ntawm cov khoom loj, xws li tag nrho cov hlwb. Membrane ntawm a phagocyte puag ncig lub xovtooj ntawm tes kom nkag mus thiab tom qab ntawd rub tawm los tsim lub phagosome sab hauv ntawm nws tus kheej uas muaj cov khoom siv sib xyaw. Phagocytosis yog ib qho txheej txheem tseem ceeb hauv kev tiv thaiv kab mob.
Ib qho ntxiv, 4 theem ntawm phagocytosis yog dab tsi?
Muaj ntau tus txheej txheem sib txawv koom nrog hauv phagocytosis:
- Kauj Ruam 1: Ua kom cov Phagocyte.
- Kauj Ruam 2: Chemotaxis ntawm Phagocytes (rau wandering macrophages, neutrophils, thiab eosinophils)
- Kauj Ruam 3: Txuas Phagocyte mus rau Microbe lossis Cell.
- Kauj Ruam 4: Kev nqus ntawm Microbe lossis Cell los ntawm Phagocyte.
Qhov thib ob, 5 theem ntawm phagocytosis yog dab tsi? Cov ntsiab lus hauv txheej no (5)
- Chemotaxis. - txav hauv kev teb rau tshuaj lom.
- Ua raws. - txuas rau microbe.
- Kev nqos. - engulfing pathogen nrog pseudopodia wrapping ib ncig ntawm cov kab mob.
- Kev zom zaub mov. - phagosome maturation.
- Tshem tawm. - phagocytes tshem tawm cov seem ntawm microbe ntawm exocytosis.
Piv txwv li, phagocytosis yog dab tsi?
Piv txwv ntawm Phagocytosis Cov qe ntshav dawb raug hu ua "kws tshaj lij" phagocytes vim lawv lub luag haujlwm hauv lub cev yog nrhiav thiab engulf invading cov kab mob. Ciliates yog lwm hom kab mob uas siv phagocytosis noj. Ciliates yog cov protozoans uas pom hauv dej, thiab lawv noj cov kab mob thiab algae.
Dab tsi ua rau phagocytosis?
Cov txheej txheem ntawm phagocytosis pib nrog kev khi ntawm opsonins (piv txwv li ua tiav lossis tshuaj tiv thaiv kab mob) thiab/lossis tshwj xeeb cov lwg me me ntawm cov kab mob saum npoo av (hu ua kab mob cuam tshuam nrog cov kab mob sib kis molecular [PAMPs]) rau cov cell receptors ntawm phagocyte . Qhov no ua receptor clustering thiab triggers phagocytosis.
Pom zoo:
Melanin yog dab tsi thiab nws txoj haujlwm yog dab tsi?
Melanin yog lub npe ntawm cov xim xim uas txiav txim siab xim dav ntawm daim tawv nqaij thiab plaub hau hauv tib neeg. Cov ntaub ntawv ntawm melanin yog lub luag haujlwm rau xim thoob plaws ntiaj teb tsiaj; Piv txwv li, tis xim hauv cov noog yog tsim los ntawm melanin
Dab tsi yog cov tshuaj tiv thaiv kab mob thiab nws txoj haujlwm yog dab tsi?
Cov tshuaj tiv thaiv, tseem hu ua immunoglobulins, yog Y-zoo li cov proteins uas tsim los ntawm lub cev tiv thaiv kab mob los pab tiv thaiv cov neeg nkag los ntawm kev ua phem rau lub cev. Thaum tus neeg nkag mus rau hauv lub cev, lub cev tiv thaiv kab mob pib ua haujlwm. Cov neeg ntxeem tau no, uas hu ua antigens, tuaj yeem yog kab mob, kab mob, lossis lwm yam tshuaj lom neeg
Lub cev tiv thaiv kab mob yog dab tsi thiab nws txoj haujlwm yog dab tsi?
Lub cev tiv thaiv kab mob yog ib qho kev sib txuas ntawm cov hlwb thiab cov proteins uas tiv thaiv lub cev tiv thaiv kab mob. Lub cev tiv thaiv kab mob khaws cov ntaub ntawv ntawm txhua tus kab mob (microbe) nws tau swb lawm yog li nws tuaj yeem lees paub thiab rhuav tshem cov kab mob sai sai yog tias nws nkag mus rau hauv lub cev dua
ADH yog dab tsi thiab nws txoj haujlwm yog dab tsi?
Nws yog ib yam tshuaj uas tsim los ntawm lub hypothalamus nyob rau hauv lub hlwb thiab khaws cia nyob rau hauv lub posterior pituitary caj pas. Nws qhia koj ob lub raum kom txuag dej ntau npaum li cas. ADH tas li tswj hwm thiab sib npaug cov dej hauv koj cov ntshav. Cov dej ntau dua tuaj yeem ua rau ntim thiab siab ntawm koj cov ntshav
Lipase yog dab tsi thiab nws txoj haujlwm yog dab tsi?
Lipase yog ib qho enzyme uas zom cov rog rog rau hauv cov molecules me me hu ua fatty acids thiab glycerol. Ib qho me me ntawm lipase, hu ua gastric lipase, yog tsim los ntawm cov cell hauv koj lub plab. Qhov enzyme tshwj xeeb zom cov rog rog hauv koj cov zaub mov