Niho 'ole: anatomical subtleties ua hoʻopili i kuleana pili i

Ke iniiaiie hana o ka niho (e like me ke kanaka a me ka holoholona) no ka mea,ʻaʻole he malu. It - wili ana o ka ai (i loko o na holoholona i paʻa, a hoopaa pio). Anatomia o ka niho, a me ko lakou helehelena mea iki okoa ke kaumaha ma muli o ka kuleana pili i. Aia mau eha ke ano: incisors, canines, premolars a me molars. Ma kānaka, i ka mua elua? Ueo i keʻokiʻoki papa, a me ka hope - e hoea.

Pehea e hana

Ka helu o nā niho ma kānaka - 32, ia mea okoa i loko o na holoholona (kaumaha ma muli o? Ueo). Ka mea, i ke aupuni 'ma ka lalani o ka luna, a malalo ā. niho 'ole i kekahi o ka iwi ā iwi i loko o mau ka ia, ka mea, e haku ana i ano like'aʻaʻa. Kēlā me kēia no ia o Nyos i loko o kona mau iwi puka i hanaʻia ma lalo a me luna, kapaʻia alveoli. Anatomically i loko o kekahi niho i ka hahai ana i ka oihana: pāpale aliʻi,'ā'ī, aa (kekahi a oi). Crown - i ka luna o ka loa ole no ka nana, huina ma luna o ka nui aʻe ana. Ke cervix mea he uuku wiwi Māhele, Aia i loko o ka pahee'aʻaʻa kona mānoanoa. Alaila, ke kumu - o ka hapa e hele ana i loko o ka hohonu o ka luawai. Kona i ka pau ana o ka maka o ka niho ua kapaia, o kona hāʻule i loko o nā aʻalolo a me nā ipu koko kino ma. Niho 'ole (ina paha canine ole molar) mea maikaʻi,ʻaʻole wale nō ka mea mawaho palapala, akā, i ka helu ana o aa (1 i 3). Kinona meaʻoki - i lalo, a ākea, ka mea, i ka ohi lihi. Canines wehewehe aku hoʻokala iki, premolars a me molars - e kamaiʻilio ana markedly haoʻa ili.

E wehewehe i ka mea maloko 'ole o ka niho, ka mea e e hoʻomaopopo i ka'aʻaʻa papa hoonohonoho ma loko o laila. Ka hohonu, ahu iho - kaʻiʻo pepa - ua poe ma ka neuro-vascular pua. Dentin poai puni i ka mea, i kekahi manawa, haawi ia i like kahua niho iwi. O nani paa, akā, i hiki ke hoopalupalu i ka wā paku ole ia i microorganisms. Akā, wehewehe i ka 'ole o ka niho i loko o kaʻilikai, ia mea pono i ka olelo i ka mea, mea ole ka ia i ka pāpale aliʻi a me ka aa. First enamelled (strikingly paa, i komo pū 97% mea pōhaku paʻakai). Ke pā, ahu iho o ke kumu ua mele o ka lepo pipili, ma ka a, he okoa ka Lime paʻakai mea he nui helu o ka collagen olona. Recent i ulana i loko o ka iwi, e pili ana periodontal (a me ka hoʻopili i ka niho i kona puka pela).

me nā 'ano

E like me ka olelo ma luna, he kanaka niho i ka papa kuhikuhiE oihana elua: mai ka incisors a me canines - ana, ma premolars a me molars - wili. Ma mammals, ka hope mau hana he like manao. Akā, no ka incisors a me canines mea okoa. Ka Moana mua e hoʻohana i "oki" ka ai mau'āpana, Fana - no ka pepehi ana a me ka paa ana i ka luahi. Front ana niho o herbivores ola mea pono e oki kanu, hiki no kaʻai. Canines i pinepine kahi e. Inā ka mea, he mau nō ma laila, oe e hōʻike mai iā ia wale nō i loko o kāne a pau. ka mea, i kāu hoʻohana 'e kaua aku kekahi i kekahi no ka wahine, a me ka alakaʻi i loko o ka mua (he pack). Microscopic 'ole o nā niho, e like me ka ho'ākāka' ia ma luna, ma nā mea a pau? Ueo o mammals ola meaola kaʻoʻoleʻa like.

Ano, ia oe i ike e pili ana, i ka mea, he o ka niho! Kēia inforrmatsiya ma kekahi hihia mea paha e maikaʻi kēia!