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.
The blue-ringed octopus belongs in this phylum because it is soft bodied, bilaterally segmented, and has a complete digestive tract. Along with these traits, they also possess coelom and are dioecious. Class: Cephalopoda. The class Cephalopoda consists of octopuses and squids.he blue-ringed octopus belongs to this group because it has eight arms and two eyes. Suborder: Incirrina. This suborder is for organisms that do not have a shell or swimming fins on the head.