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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..
During the fetal development of higher vertebrates (including humans), the notochord develops cranially until it reaches the site of the mouth. It establishes the long axis of the embryo, provides support, and sends signals to surrounding tissues.