Kusho ugebhezi umphetho kanjani ngeminyaka?

skull Human akuyona kuphela ebaluleke kakhulu amathambo ekwakhekeni, kodwa futhi kakhulu zibukeke abavelele. Ngakho-ke, zonke zayo ezihlukahlukene kungaba kungaqashelwa. Izigaba ukuguqulwa isihlobo ngempela futhi umuntu ngamunye uhlukile, kodwa kukhona iziqondiso jikelele esekelwe yobudala.

Phakathi nokuphila Yekhanda womuntu echayeke ezihlukahlukene izinguquko. Kuyinto akhathalela ngokuyinhloko ukubukeka kwakhe. Evamile, kukhona nezikhathi ezinhlanu olukhulu ushintsho. Ake sicabangele ngasinye salezi kabanzi.

isikhathi sokuqala

Lesikhatsi lesi esigabeni amaningi asebenzayo ukukhula ikhanda futhi kuthathe neminyaka eyisikhombisa yokuqala yokuphila. Kusukela ekuzalweni kuya ezinyangeni eziyisithupha, cishe kabili neurocranium ivolumu. Ngu iminyaka emibili, umthamo yayo kathathu, futhi lapho eseneminyaka emihlanu kuyinto-ngamakwata amathathu wonke Yekhanda. Lesi isilinganiso alondolozwa ukuze ukuphila. Kwakuphakathi nalesi sikhathi lishonile kakhulu fossa cranial, kanye ngemuva ekhanda uqala ukukhuluma. Ngaphezu kwalokho, izicubu membranous we egumbini cranial nezicubu cartilaginous e ithambo occipital liguquke futhi siyaphela kancane kancane. Kwenzeka lokuqala (isinyathelo sokuqala) ukwakha amathambo endoda omhlophe webhola ikhanda. Le nkathi kubaluleke kakhulu, ngoba umphetho skull akulula ukuze uvikele amathambo ekhanda nomunye futhi, okubaluleke kakhulu, iyona indawo ukukhula kwabo ububanzi.

Ukwahlukanisa sutures cranial

Sutures ihlukaniswa njengomthetho wazo okulandelayo:

• toothed;
• zibe maholoholo;
• flat.

Toothed skull umphetho ezakhiwe ithambo evele ezimbili uma umuntu enalesi projection, futhi ngakolunye - notch ukugcwalisa lezi emisebenzi. Lokhu uhlobo amalunga yilona isikhathi eside kunazo zonke. Ngu nekwendlala emaphethelweni ezimbili amathambo eduze izinhlayiya zeqhwa kwakhiwa skull suture. Zonke ezivuzayo zigcwele ezicutshini enikeza amandla futhi ukuhamba compounds ezinjalo. Futhi uhlobo wesithathu welds - flat. Flat skull suture kwakheka contact kancane mihlobiso noma thwi ithambo evele. Nge lolu hlobo uxhumano umphetho kwenzeka amathambo ebusweni phakathi kwabo, futhi igama lakhe lincike oxhumene ithambo kumiswa.

Eyesibili isikhathi izinguquko

Eminyakeni emihlanu ezayo, amathambo ekhanda ezikhulayo kancane kakhulu. Litholakala ngaphezulu zibukeke ushintsho olubonakalayo ukukhula kanye ukuma phambi ingxenye ugebhezi (emzileni, ngalo ingaphakathi acinene futhi maxillary). Kuvaliwe ngisho lo ezisanda kubelethwa isikhathi fontanelles zinyamalale ngokuphelele, futhi emalungeni zigcwele Tacna zezinzwa.

isikhathi sesithathu

Le nkathi kuvumelana ukuthomba umuntu futhi kuthathe iminyaka eyishumi (ububanzi iminyaka 14-15 ubudala iminyaka engu-25). Kuziwa lokugcina skull ukukhula zonke we skeleton Axial. Kulesi sikhathi sokuphila (ngokungafani odlule ezimbili) Ngaphezu kwalokho ukukhula olunzulu Yekhanda ebusweni, kunokuba palsy. I suture Yekhanda njengoba kumiswa yokwakheka iba okuhlala isikhathi eside, futhi uqala inkathi Ukuqina sekuyenzeka, ozobakhona kuze yokuguga. Ukwandisa base Yekhanda kuzo zonke izindawo, hhayi nje ububanzi. Ekugcineni kwakhiwa anemifantu, emikhulu, namabhampa sinuses womoya.

Isikhathi wesine

Kusukela eminyakeni engu-25 futhi kuze kube 45 akukho ushintsho kanye namathambo alowo ukuthuthukiswa ikhanda. Phakathi nale nkathi, ukuncipha umphetho skull ossified. Ezimweni ezingavamile kakhulu, emalungeni kungase kuphikelele kukho konke ukuphila.

Isikhathi yesihlanu

Lesi sigaba ihlala isikhathi umphetho imperforate size siguge. Kwenzeka ngezinga elikhulu izinguquko yokwakheka, takhi. Yesilinganiso washintsha ebusweni skull ngenxa kwamazinyo futhi yoma ka izinqubo alveolar. Njengoba bekhula, ukujiya kuyehla cancellous futhi ipuleti icwecwe futhi ugebhezi kuba lula. Ngenxa ithambo resorption bone amaminerali eshintsha isakhiwo yayo iba ziyaqothuka ngaphezulu, ufa kanye ikhefu.

isiphetho

skull Human - okuthiwa ikhanda skeleton. Lesi sakhiwo yokwakheka kubaluleke kakhulu hhayi kuphela ukuvikela ubuchopho kanye nezinhlaka sezinzwa. Lilolonga esibukeka ngayo (ubuso).

I umphetho Yekhanda, njengoba iyunithi isakhiwo-functional udlala indima ebalulekile ohlanganisa amathambo skull ndawonye. Ezinganeni, ezinkulu kufanele okukhulu bokwenza, kodwa mdala ossify.

Izigaba yentuthuko amathambo skull babe ubudala imikhawulo. Ngakho, isikhathi ezisanda kubelethwa, ngisho nalapho fontanels egcinwe (isigaba membranous), abantu uqwanga nokuvuthwa ukuqhutshwa ngesinyathelo, bese ku ithambo.

Ngu ngesikhathi sokuzalwa alikapheli kanye kumiswa ugebhezi. Kunezigaba ezinhlanu sokuthuthuka. Ngakho, kusukela ekuzalweni kuze esikoleni ubudala (iminyaka 6-7) ugebhezi ikhula kakhulu ukuphakama, kuze kuphele iminyaka emihlanu kuya eyisikhombisa ezayo Uyi inkathi kuzolile, futhi lapho kuqala zokuthomba futhi kuze kube ubudala 25 zenzeka ukuhlela kabusha ikakhulu phambi ingxenye yayo.