Blood vessel on the bottom of a worm Blood vessel on the bottom of a worm
Blood moves through the ventral blood vessel to the posterior of the body and through the dorsal vessel to the anterior of the body. The dorsal blood vessel contracts to push the blood back and then forward to the ventral vessel where a series of aortic arches act as hearts to move blood forward to the anterior end and through the capillaries.
Earthworms intake oxygen through their skin into the blood of their dorsal vessel. The dorsal vessel carries the oxygenated blood towards the aortic arches in the front of the worm. The aortic arches serve as the worm's heart, pumping blood through the ventral vessel toward the rear of the worm. Smaller vessels carry the blood from the ventral vein to the tissues and back to the dorsal vein.
The median dorsal vessel in a worm is part of its circulatory system that runs along the dorsal midline of the body. It functions to transport nutrients, waste products, and gases throughout the worm's body.
The actual "pumping system" of a worm can be mistaken as a heart, but it has no chambers. They are actually aeortic arches that pump the blood down the ventral side of the worm and it returns on the dorsal vessel.
the transport blood throughout the worm
The earthorm has a closed circulatory system with five main blood vessels:Dorsal (above the digestive tract) - it moves blood forwardThe remaining four all move the blood to the rear of the earthworm: Ventral (beneath the digestive tract)Subneural Vessel (below the nerve cord)Right & Left Lateroneural vessels (either side of nerve cord)
i think it carries blood or oxygen to the brain
the main blood vessel in the body
You can tell cause dirt comes out the dorsal side. the dorsal side is darker because its the worms main blood vessel like our aorta
muscular vessels that connect the dorsal and ventral blood vessels.
The dorsal blood vessel is located on top of the intestinal track in a worm.
In earthworms, the structure that functions similarly to the human heart is the dorsal blood vessel. This vessel acts as a pump, circulating blood throughout the worm's body. Unlike the human heart, which is a muscular organ, the dorsal blood vessel contracts rhythmically to propel the blood, helping to transport nutrients and oxygen to various tissues.