nervous system Flashcards by Maggie George

Q

porifera

A

no cephalization and no sensory cells

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Q

cnidaria

A

primitive nervous system

no cephalization

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Q

platyhelminthes

A

ladder. two lateral cords, transverse cords connecting

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Q

annelida

A

cephalization

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Q

mollusca

A

limited cephalization

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Q

cephalopods

A

giant nerve cells, image forming eyes

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Q

echinodermata

A

no cephalization. nerves.

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Q

sensory organs in echinoderms?

A

starfish and brittle stars have eyespots on arms

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Q

hexopoda

A

cephalization

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Q

crustacea

A

cephalization

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Q

chordata

A

cephalization

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Q

annelida. nerve cord?

A

ventral nerve cord

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Q

annelida. structure analogous to brain?

A

suprapharyngeal ganglia

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Q

hexapoda. nerve cord?

A

double ventral nerve cord

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Q

crustacea. nerve cord?

A

double ventral nerve cord

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Q

hexapoda. structure analogous to brain?

A

ganglia along length of cord

Q

crustacea

A

ganglia along length of cord