GENERAL HISTOLOGY

Detailed explanation-1: -Complete answer: The dorsal hollow nerve cord is only one embryonic feature unique to all chordates, among the other four chordate features; a notochord, a post-anal tail, an endostyle and pharyngeal slits. The dorsal hollow nerve cord is a hollow cord dorsal to the notochord.

Detailed explanation-2: -"The four distinctive characteristics that, taken together, set chordates apart form all other phyla are the notochord; single, dorsal, tubular nerve cord; pharyngeal pouches; and postanal propulsive tail.

Detailed explanation-3: -Chordates also have a dorsal nerve cord that runs down the length of the organism. The dorsal nerve cord has pairs of nerves that connect to the organism’s muscles. In some organisms, the dorsal nerve cord expands into a brain at the top. All chordates have a post-anal tail.

Detailed explanation-4: -The characteristic features of the phylum Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.

Detailed explanation-5: -It connects your brain to your lower back. Your spinal cord carries nerve signals from your brain to your body and vice versa. These nerve signals help you feel sensations and move your body.