5 Chordate Characteristics

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Last updated 12:02 AM on 4/25/26

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Notochord

Dorsal elastic supporting rod; semi-rigid; provides support and axis for muscle attachment

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Dorsal Hollow Nerve Chord

Develops into brain and spinal chord

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Pharyngeal Pouches (Gill Slits)

Slit like openings from pharyngeal cavity to outside; originally filter feeding devices

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Post-Anal Tail

Tail behind the end of the digestive tract; evolved for propulsion in water

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Endostyle/Thyroid Gland

Secretes iodinated hormones