It brings blood back to the Anterior of the worm
http://wiki.answers.com/Q/What_is_a_dorsal_blood_vessel...
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Dorsal blood vessel: blood vessel situated in the rear part of an earthworm. Crop: bulge of the esophagus of an earthworm. Seminal vesicles: small hollow organs that carry the semen of an earthworm. Lateral heart: blood-pumping organ of an earthworm.
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www.infovisual.info/02/006_en.html
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Dorsal blood vessel: blood vessel situated in the rear part of an earthworm. Longitudinal muscle: muscular tissue that runs lengthwise on an earthworm. Circular muscle: circular muscular tissue of an earthworm. ... Ventral blood vessel: blood vessel situated in the front part of an earthworm. Body cavity: more or less...
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www.infovisual.info/02/007_en.html
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Longitudinal vessel situated above the gut, which carries blood forward through the body. ... Source: Glasby, Chris, March 1996, Glossary of Polychaete Technical Terms and Synonyms...
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www.webref.org/invertebrate/d/dorsal_blood_vessel.htm
www.webref.org/invertebrate/d/dorsal_blood_vessel.htm
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Dorsal Blood Vessel Pulsations (mid-body) Lumbriculus variegatus (blackworm) ... 2) Identify the dorsal blood vessel [see other images of blood vessels in Lumbriculus]; 3) Describe what happens to the dorsal blood vessel, and the red blood that is within it, when a pulsation wave moves through a segment.
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www.eeob.iastate.edu/faculty/DrewesC/htdocs/INT-ANIMA-L...
www.eeob.iastate.edu/faculty/DrewesC/htdocs/INT-ANIMA-LvDBV-mid.htm
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Calculation of the Blood Volume that Moves through the Dorsal Blood Vessel in Lumbriculus variegatus (Oligochaeta, California blackworm); - - - -
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www.eeob.iastate.edu/faculty/DrewesC/htdocs/LV-DBV-calc...
www.eeob.iastate.edu/faculty/DrewesC/htdocs/LV-DBV-calc.htm
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4. A polarization rhythm was usually absent in isolated preparations of the dorsal blood vessel, but in a few preparations rhythmic activity persisted for up to 1 h. In quiescent isolated preparations membrane potentials were stable (mean resting potential = - 66.7 m V), but active membrane responses (non...
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jeb.biologists.org/cgi/content/abstract/93/1/149
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Automatic download; [Begin manual download] ... Downloading the PDF version of:; J Exp Biol DREWES et al. 93 (1): 149. (861K) ... This file is in Adobe Acrobat (PDF) format. If you have not installed and configured the Adobe Acrobat Reader on your system, see Help with Printing for instructions.
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jeb.biologists.org/cgi/reprint/93/1/149
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The two main vessels that can be seen in your dissection are the dorsal and ventral blood vessels. These vessels are the main pumping structures. In the dorsal vessel, blood moves anteriorly. The dorsal vessel is the dark line running along the dorsal surface of the digestive tract.
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www.esu.edu/~milewski/intro_biol_two/lab__12_annel_arth...
www.esu.edu/~milewski/intro_biol_two/lab__12_annel_arthro/Annelida.html
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