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The crayfish nervous system is composed of a ventral nerve cord fused with segmental ganglia, and the supresophageal and subesophageal ganglia (figure 1a and 1b) (Miller and Harley, 1992). Giant neurons in the ventral nerve cord function in escape responses (Bliss, 1990). The supraesophageal and subesophageal...
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www.science.mcmaster.ca/Biology/Harbour/SPECIES/CRAYFIS...
www.science.mcmaster.ca/Biology/Harbour/SPECIES/CRAYFISH/CRAYFISH.HTM
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The crayfish has an open circulatory system in which the blood flows from arteries into sinuses, or spaces, in tissues. The blood flows over the gills before returning to the heart.
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www.cheathouse.com/essay/essay_view.php?p_essay_id=3057...
www.cheathouse.com/essay/essay_view.php?p_essay_id=30571
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Vertebrates, and a few invertebrates, have a closed circulatory system. Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. In this type of system, blood is pumped by a heart through vessels, and does not normally fill ... Human heart vs. Crayfish heart...
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www.gsu.edu/~bioasx/closeopen.html
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A crayfish has an open circulatory system while humans have a closed circulatory system. "Closed" means that we have true blood vessels that carry blood to and from the heart. "Open" means that the organs are simply bath...
http://wiki.answers.com/Q/What_is_the_difference_betwee...
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(A study of crawfish anatomy indicates that it is the end of the abdomen.) 3 Aquaculture Curriculum Guide 3. Crawfish are also known as crayfish, ... 2. The circulatory system consists of a heart, arteries that carry blood to the vital organs ... Use TM A8 to describe the sexual distinction between male and female crawfish.
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www.aces.edu/dept/fisheries/education/documents/Crawfis...
www.aces.edu/dept/fisheries/education/documents/CrawfishFarmingteachingmodule.pdf
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In the female there is no difference between the swimmerets)? (Describe the appearance of the crayfish's swimmerets in your answer.) ... Heart & Ostia - the opening on the heart's superior surface (Is this a sign of an open or closed circulatory system? Differentiate between the two in your answer.)
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shs.westport.k12.ct.us/mjvl/biology/dissect/crayfish.ht...
shs.westport.k12.ct.us/mjvl/biology/dissect/crayfish.htm
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Use the diagram of the internal anatomy of the crayfish to locate and identify the organs of the circulatory system. Locate the dorsal tubular heart and several arteries. The crayfish has an open circulatory system in which the blood flows from arteries into sinuses, or spaces, in tissues.
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www.biologyjunction.com/crayfish_dissection.htm
www.biologyjunction.com/crayfish_dissection.htm
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1. Describe how the exoskeleton feels. How much of the crayfish is covered by the exoskeleton? ... The sperm is transfered to the female's seminal receptical where fertilization occurs for the reproduction of crayfish. e. Internal Transport: The crayfish has an open circulatory system. They have vessels that carry things...
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portfolio.washington.edu/james6/unit-3-work/101173.html
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5. Describe the circulatory system of a crayfish. 6. How does the location of the heart in the crayfish differ from the location of the heart in a human? 7. What is the function of the digestive glands? 8. What is the job of the stomach?
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portfolio.washington.edu/dlc03598/04-crayfish-dissectio...
portfolio.washington.edu/dlc03598/04-crayfish-dissection/212014.html
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