Representative Invertebrates

Representative Invertebrates - CARAPACE 9. The gills are...

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Representative Invertebrates 1. Crayfish are in the phylum ARTHROPODA 2. Crayfish are in the class CRUSTACEA 3. In a few words describe the following anatomical terms: Anterior – TOWARD THE HEAD OR FRONT END Posterior – TOWARD THE TAIL OR REAR END Dorsal – BACK OR VERTEBRAL COLUMN Ventral – BELLY OR FRONT Medial – MIDLINE OF BODY (LEFT AND RIGHT HALVES) Lateral – AWAY FROM THE MIDLINE OF THE BODY Proximal – NEAR A BODY PART, NEAR TO THE ATTACHMENT POINT TO THE BODY Distal – AWAY FROM THE ATTACHMENT POINT 4. The hard shell on the outside of the crayfish is called the EXOSKELETON 5. The outside of the crayfish is made primarily of CHITIN 6. The body of the crayfish is made of two major regions, the CEPHALOTHORAX and the abdomen . 7. The crayfish does not have veins or capillaries. Blood flows into sinuses . This is called an OPEN circulatory system. 8. The gills are located under the
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Unformatted text preview: CARAPACE 9. The gills are feathery or finely dissected to FEATHERY STRUCTURES 10. The main nerve cord runs on the VENTRAL side of the animal. 11. The heart is on the DORSAL side of the animal. 12. The green glands excrete NITROGENOUS WASTES through the NEPHRIDIOPORES 13. The cerebral ganglion is the BRAIN of the crayfish. 14. In the Paramecium digestion lab, methyl cellulose is added to SLOW DOWN THE USUALLY RAPID MOVEMENT OF THE ORGANISM 15. The Paramecium eat yeast cells that are stained with CONGO RED 16. The stain changes color in response to a change in pH 17. The food passes through the Paramecium contained in VACUOLES which circulate in the cell. 18. Undigested food leaves the Paramecium through the ANAL PORE 19. Food enters the Paramecium through the BUCCAL CAVITY 20. Food and water are swept by cilia into the end of the ORAL GROOVE...
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This note was uploaded on 04/01/2009 for the course BIO 49125 taught by Professor Allen during the Spring '09 term at University of Texas at Austin.

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Representative Invertebrates - CARAPACE 9. The gills are...

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