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.
Octopus Octopus are mollusks like squid. There are about 200 species of octopus. There are two large groups of octopus. The cirrata or finned octopuses live in the deep sea at depths of between 1000 and 24,000 feet. About 85% of octopus are in the incirrata group. They have no fins and live in shallow water in caves or crevices. Octopus have no shell at all, not even an inner one. They have eight tentacles. The tentacles have suction cups on them and are used to hold onto prey. The tentacles also have taste sensors that let the octopus know if what it grabbed is worth eating. The octopus' mouth is in the center of its tentacles.