Yaya kwanyar kabu tare da shekaru?

Human kwanyar ne ba kawai mafi muhimmanci kashi samuwar, amma kuma mafi gani shahararren. Saboda haka, duk ta bambancin iya ba tafi kada a gane shi. Akayi na canji quite dangi da kuma kowane mutum ne na musamman, amma akwai general jagororin dangane da shekaru.

A lokacin da rayuwar dan Adam kwanyar da aka fallasa zuwa iri-iri na canje-canje. Shi ne da farko damuwa tare da bayyanar. Conventionally, akwai biyar girma lokaci na canji. Bari mu bincika kowane daga cikin wadannan a more daki-daki.

farko lokacin

Wannan lokaci ne da ya fi aiki mataki na ci gaba da kai, kuma yana da farko shekaru bakwai na rayuwa. Daga haihuwa zuwa watanni shida, kusan ninki biyu na girma neurocranium. By shekaru biyu, ta girma tripled, kuma ta shekaru biyar ne kashi uku na dukan ragargaje. Wannan rabo ne kiyaye domin rayuwa. A lokacin wannan zamani ne sosai zurfi girman kwanyar fossa, kuma baya na kai fara magana. Bugu da kari, da membranous nama na girman kwanyar vault, kuma cartilaginous nama a cikin occipital kashi mutate kuma sannu a hankali bace. Yana auku farko (na farko mataki) na kafa da kwarangwal na shugaban kabu. Wannan lokaci ne mai muhimmanci sosai, saboda kwanyar kabu ba sauki m, ƙashi na daga cikin shugaban tare da juna da kuma, mafi muhimmanci, shi ne shafin da su girma a fadin.

Nau'in girman kwanyar sutures

Sutures suna classified bisa ga tsari da wadannan:

• toothed.
• scaly.
• lebur.

Toothed kwanyar kabu kafa ta biyu kashi saman lokacin da daya yana da tsinkaya, kuma a kan sauran - daraja cika wadannan tsinkaya. Wannan irin gidajen abinci ne mafi m. By ado biyu gefuna m ƙasũsuwa flake kafa kwanyar dinki. All seams suna cike da connective nama cewa ba ƙarfi da kuma motsi na irin wannan mahadi. Kuma da na uku irin welds - lebur. Flat kwanyar dinki kafa a lamba dan kadan wavy ko gaba daya lebur kashi saman. Tare da irin wannan kabu dangane auku fuska ƙasũsuwa tsakanin su, kuma suna dogara a kan juna kashi samuwar.

Na biyu lokacin canje-canje

Fiye da shekaru biyar, da ƙasũsuwan da kai suna girma sosai a hankali. Yana faruwa a mafi gani m canji a cikin girma da kuma siffar gaba, na daga cikin kwanyar (da kewayewa, hanci kogo da kuma maxillary). Rufe ko a cikin neonatal lokaci fontanelles bace gaba daya, da kuma gidajen abinci suna cike da connective Tacna.

uku lokaci

Wannan lokaci ya zo daidai da lokacin balaga mutum kuma yana shekara goma (kewayon 14-15 shekara zuwa shekaru 25). Ya zo karshe kwanyar girma da kuma duk na axial kwarangwal. A wannan lokaci na rayuwa (sabanin baya biyu) ne mafi m girma daga cikin fuska kwanyar, maimakon cerebral. A dinki na kwanyar kamar yadda ilimin Halittar Jiki samuwar zama mafi m, kuma shi zai fara wani lokaci na ossification, wanda yana har tsufa. Kara tushe daga cikin kwanyar a duk inda, ba kawai m. A karshe kafa GROOVES, ridges, bumps, kuma pneumatic sinuses.

A karo na hudu lokaci

Daga shekaru 25 da har zuwa 45 babu wani canji a cikin kasusuwa na shugaban ci gaba. A wannan lokacin, da kwanyar kabu ossified. A sosai rare lokuta, da gidajen abinci na iya dage dukan rayuwarsa.

Na biyar lokaci

Wannan mataki yana na tsawon imperforate kabu zuwa tsufa. Yana auku zuwa mafi girma mataki ilimin Halittar Jiki canje-canje, da kuma tsarin. Gani canza fuska kwanyar saboda hakori asarar da atrophy na da alveolar tafiyar matakai. Tare da shekaru, da kauri an rage cancellous kuma m farantin da kwanyar zama sauki. Saboda kashi resorption da kashi ma'adinai ta sauya tsarin zama mafi gaggautsa, crack da kuma hutu.

ƙarshe

Human kwanyar - abin da ake kira kwarangwal kai. Wannan ilimin Halittar Jiki tsarin ne musamman da muhimmanci ba kawai domin kare kwakwalwa da kuma azanci shine gabobin. Yana suranta mu bayyanar (fuska).

A kabu kwanyar, a matsayin tsarin aikin naúrar taka muhimmiyar rawa a haɗa da kwanyar ƙasũsuwa tare. A yara, da seams da mafi girma sassauci, amma tare da shekaru da suka ossify.

Akayi na ci gaba da kwanyar ƙasũsuwa da shekaru iyaka. Saboda haka, neonatal lokaci, ko da adana fontanels (membranous mataki), mutum guringuntsi maturation Saide a mataki, sa'an nan a cikin kashi.

By lokacin haihuwa ba kammala ba, kuma da samuwar da kwanyar. Akwai biyar matakai na ta ci gaba. Saboda haka, daga haihuwa zuwa makaranta shekaru (6-7 shekaru) da kwanyar tsiro, yafi tsawo, na gaba shekaru biyar zuwa bakwai masu tsawon zumunta kwantar da hankula, da kuma da farko na mafarki da kuma har zuwa shekaru 25 na shekaru faruwa gyare-gyare, yafi ta gaban part.