As the blood pumping organs, muscles around the blood vessels to various parts of the body by means of rhythmic contraction repeatedly. Found in all kinds of animals with a circulatory system that include vertebrate.
Is a muscular organ pumped blood through the arteries to the various parts of the body by repeated, rhythmic contractions found in all animals with a circulatory system. This includes the vertebrates
Is an organ muscles which drained throughout the blood vessels to various parts of the body by the rhythmic contraction repeatedly found in all animals with the circulatory system. Which included the vertebrates.