part of part of cervical vertebra 1 anterior tubercle tuberculum anterius atlantis SCTID:281224005 anterior tubercle of atlas The conical ventral projection on the arch of the atlas. FMA:23991 tubercle of anterior arch of atlas ventral tubercle of atlas tuberculum anterius (atlas) TODO - check: anterior vs ventral; arch vs transverse process UBERON:0005810 MA:0002871 cervical vertebra 1 ventral tubercle atlas ventral tubercle tubercle arch of atlas skeletal element projection