ɪnðə dˈiːp ɡɹˈuːv ɔnðɪ ˌʌpɚ sˈɜːfɪs ʌvðə pɑːstˈɪɹiɚɹ ˈɑːɹtʃ ʌvðɪ ˈætləs ɑːɹ ðə vˈɜːɾɪbɹəl ˈɑːɹɾɚɹi ænd ðə fˈɜːst sˈɜːvɪkəl ɔːɹ sˈʌbəksˌɪpɪɾəl nˈɜːv.
In the deep groove on the upper surface of the posterior arch of the atlas are the vertebral artery and the first cervical or suboccipital nerve.