Cov txheej txheem:
- Cov hniav txheej twg muaj tubules?
- tubules hauv cov hniav yog dab tsi?
- enamel yog dab tsi?
- Yuav ua li cas hauv qab cov hniav ntawm koj cov hniav?
Video: Puas enamel muaj tubules?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
1. Hniav Tubules yog Me me thiab zaum hauv qab koj cov enamel… Lawv nyob hauv lub dentin, uas yog txheej hauv qab koj cov hniav enamel. Hniav tubules yog me me tubules uas khiav los ntawm sab hauv ntawm cov hniav (lub pulp chamber) tawm los ntawm cov tawv dentin thiab xaus rau hauv qab cov enamel.
Cov hniav txheej twg muaj tubules?
Dentin. Ib feem ntawm cov hniav uas yog hauv qab enamel thiab cementum. Nws muaj microscopic tubules (cov hlab me me lossis cov kwj dej).
tubules hauv cov hniav yog dab tsi?
Dentin tubules yog me me, hollow microscopic channels uas taug kev los ntawm sab hauv ntawm tus hniav(qhov twg lub pulp yog) tawm los ntawm lub dentin, xaus rau hauv qab cov enamel. Dentin yog txheej nruab nrab ntawm cov hniav, tsim cov hniav ntau.
enamel yog dab tsi?
Enamel yog cov khoom hnyav tshaj plaws hauv tib neeg lub cev thiab muaj cov feem pua ntawm cov zaub mov ntau tshaj plaws (ntawm 96%), nrog dej thiab cov khoom siv organic ua ke. Cov pob zeb tseem ceeb yog hydroxyapatite, uas yog crystalline calcium phosphate.
Yuav ua li cas hauv qab cov hniav ntawm koj cov hniav?
Cov hniav hauv qab yog txheej dentin ntawm tus hniavDentin yog cov khoom ntxeem tau. Thaum ruaj, nws tsis muaj zog npaum li cov hniav enamel. Cov pores me me hauv lub dentin yog hu ua dentinal tubules, thiab lawv pab cov hniav sau npe ntawm qhov siab thiab kub.
Pom zoo:
Puas puas muaj qhov tsis muaj huab cua muaj huab cua?
Nyob rau hauv particle physics, ib tug massless particle yog ib tug elementary particle uas invariant loj yog xoom. Neutrinos yog thawj zaug xav tias tsis muaj dab tsi. … Txawm li cas los xij, vim hais tias neutrinos hloov tsw thaum lawv mus ncig, tsawg kawg yog ob hom neutrinos yuav tsum muaj huab hwm coj .
Koj puas yuav tsum xuab zeb ntawm cov tsho tiv no ntawm enamel?
Tsis xav tau xuab zeb nyob nruab nrab ntawm cov tsho tshwj tsis yog tias koj muaj me ntsis nibs lossis imperfections koj xav tshem tawm. Yog tias kuv ua xuab zeb kuv yuav siv 320 grit. Yog tias koj tos ntau tshaj li ib lub lim tiam lossis yog li koj yuav xav xuab zeb, tab sis tsis yog hnub tom ntej lossis ob hnub .
Puas tag nrho cov kab puas muaj malpighian tubules?
Malpighian tubule, nyob rau hauv kab, ib yam ntawm cov kab mob excretory uas nyob rau hauv lub plab lub cev kab noj hniav thiab khoob mus rau hauv kev sib tshuam ntawm midgut thiab hindgut. Hauv hom muaj ob peb malpighian tubules, lawv yog ntev thiab coiled;
Puas yog enamel tib yam li plooj (porcelain)?
Raws li lub npe qhov txawv ntawm enamel thiab porcelain yog cov enamel yog opaque, iav txheej ci rau cov hlau lossis cov khoom siv ceramic thaum cov plooj (feem ntau | suav tsis tau) tawv, dawb, translucent ceramic uas yog tsim los ntawm firing kaolin thiab lwm yam ntaub ntawv;
T tubules thiab lub davhlau ya nyob twg cisternae txuas li cas?
Ob lub davhlau ya nyob twg cistemae ntawm SR ua ke nrog lawv cov T tubule uas muaj feem xyuam yog hu ua triad. Hauv cov leeg nqaij, T-tubules nyob ib sab ntawm lub davhlau ya nyob twg cisternaentawm cov txheej txheem sab hauv tau los ntawm endoplasmic reticulum, hu ua sarcoplasmic reticulum (SR), uas yog lub khw ntawm calcium.
