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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..
Dorsal Nerve Root. Sections. A dorsal nerve root â also known as a posterior nerve root â is a main bundle of nerve fibers that branches off the spinal cord and goes to other areas of the body.Dorsal nerve roots are responsible for carrying signals of sensation (such as feelings of pain and temperature) from the body to the brain.orsal Nerve Root. Sections. A dorsal nerve root â also known as a posterior nerve root â is a main bundle of nerve fibers that branches off the spinal cord and goes to other areas of the body.