Cov hniav qis qis molar cov hniav Cov molars lossis cov hniav molar yog loj, cov hniav tiaj tus tom qab ntawm lub qhov ncaujLawv tsim ntau dua hauv cov tsiaj. Lawv feem ntau yog siv los zom zaub mov thaum zom. Lub npe molar muab los ntawm Latin, molaris dens, lub ntsiab lus "millstone tooth", los ntawm mola, millstone thiab dens, tooth. https://en.wikipedia.org › wiki › Molar_(tooth)
Molar (tooth) - Wikipedia
nyob rau hauv tag nrho cov Hominids feem ntau muaj tsib cusps thiab ob lub hniav zoo li cov hauv paus hniav, positioned mesially thiab distally. Tib neeg M2s, txawm li cas los xij, feem ntau tsuas muaj 4 cusps thiab accessory cusps yog muaj rau txhua tus molars.
tib neeg puas muaj cusps?
Nyob hauv tib neeg. Lub cusp yog ib qho occlusal lossis incisal eminence ntawm tus hniav. Canine hniav, txwv tsis pub hu ua cuspids, txhua tus muaj ib qho cusp, thaum premolars, txwv tsis pub hu ua bicuspids, muaj ob leeg. Molars ib txwm muaj plaub lossis tsib cusps.
Muaj pes tsawg cusps?
Lub aortic valve muaj peb cusps: sab laug coronary cusp (LCC), txoj cai coronary cusp (RCC), thiab tsis-coronary cusp (NCC).
peb cov molars muaj pes tsawg tus neeg?
Molars yog cov hniav tiaj tus tom qab ntawm lub qhov ncauj. Txhua tus molar feem ntau muaj plaub lossis tsib cusps. Lawv tsuas yog siv rau crushing thiab sib tsoo.
muaj pes tsawg bicuspids?
Tom ntej no los ntawm bicuspids, lossis premolars. Muaj yim bicuspids, plaub bicuspids nyob rau sab saum toj arch thiab plaub nyob rau hauv qab koov. Loj dua cov incisors thiab canines, tab sis me dua cov molars, cov bicuspids muaj ib tug flatter saum npoo nrog ntau ridges siv los grind zaub mov rau hauv me me pieces.
