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.
In order for an octopus species to become arboreal, it first has to develop lungs like a frog. It also has to adopt a generally green color, and increase the durability of its â¦ eggs, which would dry out if hung in long strings as they typically are in the underwater habitat.he octopus can squirt ink to blindside theirpredators they can camouflage quickly and also they are an invertebrate so they can squeeze through tight spots.