Signs and symptoms of the chronic phase of Chagas disease may occur 10 to 20 years after initial infection, or they may never occur. In severe cases, however, Chagas disease signs and symptoms may include: 1  Irregular heartbeat.2  Congestive heart failure. 3  Sudden cardiac arrest.4  Difficulty swallowing due to enlarged esophagus.igns and symptoms of the chronic phase of Chagas disease may occur 10 to 20 years after initial infection, or they may never occur. In severe cases, however, Chagas disease signs and symptoms may include: 1  Irregular heartbeat.
Behind the octopus's head, directly opposite the arms, is its mantle. The mantle is a highly muscled structure that houses all of the animal's organs. Its gills, hearts, digestive system and reproductive glands are all crammed into this one space.
Moving Octopus vulgaris. Octopus is a genus of cephalopod mollusc in the order Octopoda. The genus is quite typical of most octopods. They have two eyes and four pairs of arms with suckers. They have a hard beak, with the mouth at the center point of the arms. Octopods have no internal or external skeleton, allowing them to squeeze through tight places. Many stay in cracks between rocks or corals when they are not hunting. They are intelligent predators with a taste for crabs. Octopods inhabit many regions of the ocean,