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The digestive tract (figure 1a) consists of the foregut, ... 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...
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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 dissection of the crayfish requires a great deal of care. Be certain to ... Locate the large yellowish digestive gland, which occupies much of the posterior part of the cephalothorax (Figure 13, 14). It secretes enzymes and stores food. With a probe, move it aside and find the remainder of the digestive system.
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kentsimmons.uwinnipeg.ca/16cm05/16labman05/lb6pg12.htm
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Nov 9, 2009 ... Crayfish don't chew their food. That's why their mothers are always nagging them. "The digestive system has a stomach for grinding food" ...
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answers.yahoo.com/question/index?qid=20091109093331AAPK...
answers.yahoo.com/question/index?qid=20091109093331AAPKaVP
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Crayfish Appearance ... In the open circulatory system blood flows from the heart through the arteries and returns into open sinuses. The digestive system has a stomach for grinding food and a gland for chemical processing. The antennal gland is the main excretory organ.
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www.mackers.com/crayfish/info.htm
www.mackers.com/crayfish/info.htm
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Crayfish Information ... Crayfish, also called crawfish or crawdad, are closely related to the lobster. More than half of the more than 500 species occur in North America, particularly Kentucky (Mammoth Cave) and Louisiana in the Mississippi basin. ... Internal Anatomy. Digestive system, etc.
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www.mackers.com/crayfish/
www.mackers.com/crayfish/
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The digestive system of a crayfish is simple compared to other vertebrates, but far more complex than other invertebrates. The tract is composed a foregut (enlarged stomach that is specialized for grinding), the midgut, and the hindgut - leads to anus and regulates salt and water as well.
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specialist16.blogspot.com/2007/10/dissection-crayfish.h...
specialist16.blogspot.com/2007/10/dissection-crayfish.html
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Locate the digestive gland, which produces digestive substances and from which ... The crayfish has an open circulatory system in which the blood flows from ...
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www.smithlifescience.com/CrayfishDissection.htm
www.smithlifescience.com/CrayfishDissection.htm
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Digestive and Excretory System ... 1. Trace the digestive system from the mouth through the esophagus to the cardiac stomach, where the food is ground up. ... Return to Crayfish Dissection Table of Contents...
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www.aa.psu.edu/biology/crayfish/digest.htm
www.aa.psu.edu/biology/crayfish/digest.htm
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Anus (In which of the two structures above did you find the anus? 1 or 2 way digestive system?) ... Is your Crayfish a male or a female (Note the anterior-most swimmeret. In the male, its function is to guide the sperm toward the female during copulation; as such, it will be enlarged, and pointed anteriorly in the male.
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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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