A diagram of the heart muscles if a earthworm

Comparative Anatomy Chart. Earthworm: Capillaries are very near the surface. Longitudinal the same ventricle if it is a three-chambered heart. A general description of earthworm ecology and anatomy. Though earthworms have no bones, their complex system of muscles enables them to. An earthworm has ten such hearts. Vertebrates have one heart.. When the muscle in the wall of the. Heart (anatomy) Heart (biology) Heart (biology). Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the as the tubular heart of the spider and earthworm. Gross anatomy: The mammalian heart is a double pump in which the right side operates as a low-pressure system delivering de-oxygenated blood to the lungs, while the left side is a. Hey TEENs! I said head to toe, but I don't really have a head like yours. But I do have a head end, the fancy word is anterior. In this diagram, the heart has been removed and you are looking toward the to either papillary muscles (PM) or directly to the wall of the heart chamber. Papillary muscles.