Mano amatithandiza kuluma chakudya, kutchula mawu molondola, ndi kusunga mawonekedwe a nkhope yathu.Mitundu yosiyanasiyana ya mano m'kamwa imakhala ndi maudindo osiyanasiyana choncho imabwera mosiyanasiyana ndi kukula kwake.Tiyeni tione zomwe zili m’kamwa mwathu komanso zimene zingabweretse phindu.
Mtundu wa dzino
Maonekedwe a mano amawathandiza kuti azigwira ntchito inayake akamatafuna chakudya.
8 incisors
Mano akutsogolo kwambiri mkamwa amatchedwa incisors, anayi pamwamba ndi anayi, pa asanu ndi atatu.Maonekedwe a incisors ndi athyathyathya ndi owonda, pang'ono ngati chisel.Amatha kuluma chakudya m’tizidutswa ting’onoting’ono mutangoyamba kutafuna, kukuthandizani kutchula mawu molondola polankhula, ndi kusunga milomo yanu ndi maonekedwe a nkhope yanu.
Mano akuthwa pafupi ndi incisors amatchedwa canines, awiri pamwamba ndi awiri pansi, chifukwa cha zinayi.Mano a canine ndi aatali komanso osongoka ndipo amagwira ntchito yofunika kwambiri pakuphwanya chakudya, monga nyama, kotero nyama zodyeramo nyama nthawi zambiri zimakhala ndi mano okulirapo.Osati mikango ndi akambuku, komanso ma vampires omwe ali m'bukuli!
8 ma premolar
Mano akuluakulu, osalala pafupi ndi mano a canine amatchedwa premolars, omwe ali ndi malo otsetsereka komanso okwera m'mphepete, kuwapangitsa kukhala oyenera kutafuna ndi kugaya chakudya, kuluma chakudya kukula koyenera kumeza.Akuluakulu okhwima amakhala ndi ma premolari asanu ndi atatu, anayi mbali iliyonse.Ana aang'ono alibe mano a premolar ndipo nthawi zambiri samatuluka ngati mano osatha mpaka atakwanitsa zaka 10 mpaka 12.
Molars ndiye mano akulu kwambiri kuposa mano onse.Ali ndi malo aakulu, ophwanyika okhala ndi m'mphepete mwake omwe angagwiritsidwe ntchito kutafuna ndi kupera chakudya.Akuluakulu ali ndi ma molars 12 okhazikika, 6 kumtunda ndi 6 pansi, ndi 8 okha pa papillae mwa ana.
Mano omaliza omwe amatuluka amatchedwa mano anzeru, omwe amadziwikanso kuti mano anzeru achitatu, omwe nthawi zambiri amatuluka pakati pa zaka 17 ndi 21 ndipo amakhala mkati mwa mkamwa.Komabe, anthu ena alibe mano onse anayi anzeru, ndipo mano ena anzeru amakwiriridwa m’fupa ndipo samaphulika.
Ana akamakula, mano osatha amayamba kuphulika pansi pa mano a ana.Mano achikhalire akamakula, mizu ya mwanayo imatengedwa pang’onopang’ono ndi mkamwa, zomwe zimachititsa mano a anawo kukomoka ndi kugwa, zomwe zimachititsa kuti manowo akhale osatha.Ana nthawi zambiri amayamba kusintha mano ali ndi zaka zisanu ndi chimodzi ndikupitirizabe mpaka atakwanitsa zaka 12.
Mano osatha ndi monga incisors, canines, premolars, ndi molars, pamene mano ana alibe premolars.Mano omwe amalowa m'malo mwa madontho amadzimadzi amatchedwa premolars yoyamba ndi yachiwiri.Panthawi imodzimodziyo, mandible idzapitiriza kukula panthawi ya kutha msinkhu, kupanga malo ochulukirapo a ma molars.Mitsempha yokhazikika yokhazikika nthawi zambiri imaphulika pakadutsa zaka zisanu ndi chimodzi, ndipo yachiwiri yokhazikika nthawi zambiri imawoneka pafupifupi zaka 12.
Dzino lachitatu lokhazikika, kapena dzino lanzeru, nthawi zambiri siliphulika mpaka zaka 17 mpaka 25, koma nthawi zina silingawonekere, kukhala dzino lowonongeka, kapena kusaphulika konse.
Mwachidule, pali mano 20 a ana ndi 32 okhazikika.
Kanema wa sabata:https://youtube.com/shorts/Hk2_FGMLaqs?si=iydl3ATFWxavheIA
Nthawi yotumiza: Dec-01-2023