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The dorsal nerve cord is one of the embryonic features unique to chordates, along with a notochord, a post-anal tail and pharyngeal slits. It is a hollow cord dorsal to the no â¦ tochord.ike humans, A dorsal nerve cord would be present on the back of the person or chordate. Some invertebrates such as arthropods, have a ventral nerve cord on the belly..
Cranial nerves supply the sense organs and muscles of the head, neck, and viscera. Like spinal nerves, cranial nerves have dorsal and ventral roots (see nerve root) and each root is numbered and named as a separate nerve. Twelve cranial nerves are conventionally recognized in humans.