Notes on Annelida Organ System

Notes on Annelida Organ System - 22:02 Organ Systems 1 1...

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22:02 Organ Systems 1. 1. Muscular system 1. circular, longitudinal and dorsolateral muscles 2. 2. Complete digestive system: ex. Earthworm 1. Pharynx: ingestion of food 2. Esophagus: transport of food 3. Crop: food storage 4. Gizzard: crushing of food 5. Intestine: for absorption of nutrients 3. 3. Central nervous system 1. cerebral ganglia as functional brain 2. ventral nerve cord (single chain of ventral ganglia) 4. 4. Closed circulatory system
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Unformatted text preview: 1. Oligochaetes posses five lateral pulsating blood vessels serving as heart-like organs 2. Ventral and dorsal vessels along longitudinal body axis 3. Hemoglobin as respiratory pigment 5. 5. Excretory system 1. Ciliated, funnel shaped metanephridia • • Annelid Development proceeds through larval stage: Trochophora larva • • Annelids are part of the Lophotrochophora...
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  • Spring '10
  • Kant
  • Annelid, Ventral nerve cord, Annelid Development

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