Oligochaeta - Earthworm

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13 Terms

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Brain, cerebral ganglia*

Sensory processig and intergration

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Pumping vessel “hearts’

Maintain steady blood pressure

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Dorsal blood vessel

Pumps blood

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Pharynx

Helps pull soil into buccal cavity

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Esophagus*

Conduit for food

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Crop

Food storage

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Gizzard

Mechanical breakdown of food - grinding

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Seminal receptacles

Stores sperm from mate during copulation

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Seminal vesicles

Immature sperm matures then passes out genital pores

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Intestine

Chemical breakdown, nutrient absorption

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Nephridia

Waste excretion

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Septa

Provides division internally

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Clitellum

Important for reproduction and development