invertebrate nervous systems · invertebrate nervous systems a simple cnidarian an echinoderm...

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INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical. Starfish larvae are bilaterally symmetrical. Image from

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Page 1: INVERTEBRATE NERVOUS SYSTEMS · INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical. Starfish larvae

INVERTEBRATE NERVOUS SYSTEMS

A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical.

Starfish larvae are bilaterally symmetrical.

Image from

Page 2: INVERTEBRATE NERVOUS SYSTEMS · INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical. Starfish larvae

PLATYHELMINTHS - flatworms.

ARTHROPODS and MOLLUSCS.

Page 3: INVERTEBRATE NERVOUS SYSTEMS · INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical. Starfish larvae

APLYSIA (a sea-slug).

Page 4: INVERTEBRATE NERVOUS SYSTEMS · INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical. Starfish larvae
Page 5: INVERTEBRATE NERVOUS SYSTEMS · INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical. Starfish larvae

Dorsal and ventralnerve cords.

Page 6: INVERTEBRATE NERVOUS SYSTEMS · INVERTEBRATE NERVOUS SYSTEMS A simple cnidarian An echinoderm (starfish). Not really (= coelenterate), Hydra radially symmetrical. Starfish larvae

The phylum Chordata also includes all the vertebrates.