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Chapter 17
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Total cards: 3•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (3)
#1
Front (Question)
List and describe the four major characteristics of the Chordata.
Back (Answer)
1) a single, hallow, dorsal nerve cord (spinal cord) 2) pharyngeal slits (gills on the pharynx) used for filler feeding or breathing 3)notochord (flexible skeleton rod) 4)post-anal tail (behind anus)
#2
Front (Question)
What is the importance of the notochord?
Back (Answer)
*supports and stiffens the body *provides a surface for muscle attachment *body can bend without shortening
#3
Front (Question)
What are the three major groups of chordates?
Back (Answer)
*Lancelets *Tunicates *Craniates