Umurtqa
Umurtqa, umurtqalar – odam va umurtqali hayvonlar umurtqa pogonasini tashkil etadigan kalta gʻovak suyaklar. Odamda umurtqa tana, ravoq va oʻsiqlardan iborat. Umurtqa 33—34 boʻlib, bulardan 7 tasi boʻyin, 12 tasi koʻkrak, 5 tasi bel, 5 tasi dumgʻaza va 4—5 tasi dum umurtqasidir. Dumgʻaza va dum umurtqalari keyinchalik (kishi 17—25 yoshga yetganda) oʻzaro birlashib, bitta suyakni hosil qiladi. Umurtqa ravoqlarining birlashishidan vujudga kelgan kanalda orqa miya, umurtqa atrofida esa muskullar joylashgan. Umurtqalarning oʻzaro qoʻshilishidan umurtqa pogʻonasi tashkil topadi.
Manbalar
 | Ushbu maqolada Oʻzbekiston milliy ensiklopediyasi (2000-2005) maʼlumotlaridan foydalanilgan. |
 | Ushbu maqola chaladir. Siz uni boyitib, Vikipediyaga yordam berishingiz mumkin. Bu andozani aniqrogʻiga almashtirish kerak. |
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