Zino mamiriro: anatomical subtleties kwakabatana ishande

The chikuru basa mazino (somunhu kana mhuka) munhu kwete zvakavanzika. It - ngaakuyire zvokudya (mu mhuka uyewo andobata uye kuchengeta nezvavakatapa). Anatomy mazino uye avo chimiro siyanei zvichienderana mashandiro. Pane mhando ina: incisors, canines, premolars uye molars. Muvanhu, mhando mbiri dzokutanga vane nokuveza basa, uye vokupedzisira - apwanye.

How vanoshanda

Kuwanda mazino muvanhu - 32, zviri yakasiyana nemhuka (zvichienderana nemhando). Vari riri mumutsetse rokumusoro uye ezasi shaya. zino mamiriro mumwe shaya mapfupa zvavo zvakafanana, vari anoumbwa tishu zvakafanana. Mumwe nomumwe wavo riri yazvo mapfupa gomba vakaumba kudzika kana huyo rushaya, inonzi Formação de. Anatomically chero zino ndedzinotevera madhipatimendi: korona, mutsipa, mudzi (imwe kana kupfuura). Korona - yokumusoro chikamu chinonyanya nyore rokuongorora, projecting pamusoro chingamu. The cervix duku mutete Division, iri nyoro tishu ukobvu. Saizvozvowo, mudzi - chikamu kupinda kudzika tsime. Its kuguma muromo zino anonzi, kuburikidza naye muviri yawira tsinga nemidziyo ropa. Zino mamiriro (kana canine kana matadza) ndiyo kwazvo kwete chete muchimiro zvokunze, asiwo nhamba yemidzi (1 kusvika 3). Maumbirwe aricheke - sandarara uye rakapamhamha, vane okurwadzisa mucheto. Canines anozivikanwa arodzwe ikakuruma, premolars uye molars - kutsenga gogonera chaizvo pemvura.

Kutsanangura womukati nemamiriro zino, zvinofanira kucherechedzwa kuti zvinyama akaturikidzana akaronga mairi. The gobvu rukoko - ari pulp - anomiririrwa neuro-vascular masumbu. Dentin unopoteredza izvozvo, dzimwe nguva anonzi mazino pfupa. Zviri tsvarakadenga zvikukutu, asi kunogona kupfavisa kana vachibatwa tusingaoneki. Asi ndatsanangura nemamiriro zino iri pamusoro layer zvakakosha kutaura kuti hazvisi chete panguva korona uye mudzi. First enamelled (ndezvokuti zvikukutu, raisanganisira 97% chicherwa munyu). Chokunze paiva mudzi rinoumbwa esimende, iyo, kunze madota munyu ndiwo vakawanda collagen fibers. Recent yakarukwa kupinda pfupa, ndinosika periodontal (uye nokudaro achabatanidza kuti zino wayo buri).

okufananidza unhu

Sezvataurwa pamusoro apa, zino munhu ane huru mbiri Mabasa: kubva incisors uye canines - nokuveza, mune premolars uye molars - kukuya. In mhuka, yokupedzisira maviri kuita zvakafanana chinangwa. Asi nokuda incisors uye canines yakasiyana. The zvikara okutanga anoshandiswa "kucheka" zvokudya zvidimbu fangs - yokuuraya uye vakabata chepaseka. nokuveza meno herbivores zvipenyu Front vanofanira kucheka miti, richisvika zvokudya. Canines kakawanda vasipo. Kana vachiri ikoko, uri kukurukurwa chete varume. vari yemanyorero kushandiswa kurwisa mumwe nokomukadzi uye kutungamirira nhano (a rongedza). Nemaziso maumbirwo kwemeno, sokurondedzerwa kumusoro, mune mhando dzose mhuka zvipenyu nehasha zvakafanana.

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