coronary sinus blood vessels carry blood to the heart.
coronary sinus blood vessels carry blood to the heart.
what blood vessels carry blood to the heart?
coronary sinus
blood vessels carry blood throughout the body, which moves because of the beating of the heart. venules and veins collect blood low in oxygen from tissues throughout the body. these collect in progressively larger veins until they reach the body's two largest veins, the superior and inferior vena cava, which drain blood into the right side of the heart. from here, the blood is pumped into the lungs where it receives oxygen and drains back into the left side of the heart. from here, it is pumped into the body's largest artery, the aorta, and then progressively smaller arteries and arterioles until it reaches tissue. here blood passes from small arteries into capillaries, then small veins and the process begins again. blood carries oxygen, waste products, and hormones from one place in the body to another. blood is filtered at the kidneys and liver.
human body
the earthworm has a dual circulatory system in which both the coelomic fluid and a closed circulatory system carry the food, waste, and respiratory gases. the closed circulatory system has five main blood vessels: the dorsal (top) vessel, which runs above the digestive tract; the ventral (bottom) vessel, which runs below the digestive tract; the subneural vessel, which runs below the ventral nerve cord; and two lateroneural vessels on either side of the nerve cord. the dorsal vessel moves the blood forward, while the other four longitudinal vessels carry the blood rearward. in segments seven through eleven, a pair of aortic arches rings the coelom and acts as hearts, pumping the blood to the ventral vessel that acts as the aorta. the blood consists of ameboid cells and hemoglobin dissolved in the plasma. the second circulatory system derives from the cells of the digestive system that line the coelom. as the digestive cells become full, they release non-living cells of fat into the fluid-filled coelom, where they float freely but can pass through the walls separating each segment, moving food to other parts and assist in wound healing.
earthworm