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In the blood circulation of Pheretima, the blood collected by lateral Oesophageal blood vessel flows into supra oesophageal blood vessels through :

(1) Lateral oesophageal hearts and ring vessels

(2) Anterior loops and ring vessels

(3) Lateral herats and commissural blood vessels

(4) Lateral herats and anterior loops

1 Answer

(2) Anterior loops and ring vessels
answered Nov 7, 2013 by pady_1
 

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