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Chordates

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Chordates
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Vocabulary

dorsal hollow nerve cord

dorsal hollow nerve cord

A hollow cord dorsal to the notochord; later modified into the brain and spinal cord; embryonic features unique to chordates.
pharyngeal slits

pharyngeal slits

Filter-feeding organs; at some stage of life, found in all chordates.
post-anal tail

post-anal tail

A tail that is opposite the head and extends past the anus.
chordate

chordate

Consists of all animals with a notochord, dorsal hollow nerve cord, post-anal tail, and pharyngeal slits during at least some stage of their life; includes fish, amphibians, reptiles, birds, and mammals.
vertebrate

vertebrate

Animal with a vertebral column, or backbone.

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