A: The pumping organs of the circulatory system are five aortic arches. Circulatory fluids travel from the arches through the ventral blood vessel to capillary beds in the body. The fluids then collect in the dorsal blood vessel and reenter the aortic arches.n the intestine, which extends over two-thirds of the body lenght, digestion and absorbsion take place. The gizzard is a muscular organ used to churn the food and then it moves onto the intestine where absorbtion of the food occurs. 8. Your dissection of the earthworm did not go beyond segment 32.