Frai 27++ Pretrematic Nerve Of Third Arch
Frai 27++ Pretrematic Nerve Of Third Arch. The third occipital nerve (ton) is a branch of the posterior root of c3, which provides cutaneous sensation to a small portion of the occipital scalp. In fishes it splits into 2 main branches: The third occipital nerve supplies an area of the medial occipital scalp, overlapping with areas supplied by the greater and lesser occipital nerves. Motor to small throat and mouth muscles.