Atlas vertebra shine kashin bayan mahaifa na farko na kashin baya, wanda yake a saman wuyansa. Ana kiran ta ne da sunan Atlas mai tatsuniyoyi, wanda aka ce yana ɗaukar nauyin duniya a kafaɗunsa, saboda ƙashin bayan Atlas yana goyan bayan nauyin kwanyar. Vertebra na Atlas yana bayyana tare da kashin kwanyar kwanyar, yana ba da izinin nodding kai.
