Ajgu n uzagur neɣ Ajgu n warur ɣer imuddiren imtegzaten d tagrawt n teɣlalin yulmen (ifeṛɣen) i taggaẓt n uleqqin iy teddun s teɣzi-ynes. Deg tfekka n wemdan llant 33 n teɣlalin.[1][2][3]. Ilem deg wanda yettili uleqqin isem-is amruj anaɣlal

Ɣer wemdanẒreg

TiɣlalinẒreg

Ɣer iɣersiwenẒreg

Ẓeṛ daɣenẒreg

  • Frietson Galis (1999). "Why do almost all mammals have seven cervical vertebrae? Developmental constraints, Hox genes and Cancer" (PDF). Journal of experimental zoology. 285 (1): 19–26. doi:10.1002/(SICI)1097-010X(19990415)285:1<19::AID-JEZ3>3.0.CO;2-Z. PMID 10327647. Unknown parameter |akala n ufaylu= ignored (help); Unknown parameter |azmez n ufaylu= ignored (help)
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  • Somites, Spinal Ganglia, and CentraArchived Yulyu 15, 2016, at the Wayback Machine