Inform. 1  Edgar Veytia, attorney general for the Mexican state of Nayarit, has been arrested by federal agents in San Diego and is being held on an indictment on charges that he conspired to smuggle heroin, cocaine and methamphetamine into the U.S. ...
Squid have three hearts: two and one systemic heart. The branchial hearts pump blood to the gills, where oxygen is taken up. Blood then flows to the systemic heart, where it is pumped to the rest of the body. The systemic heart is made of three chambers: a lower ventricle and two upper auricles.
Cephalopods have three hearts (two to send blood to the gills, and one to send blood to the rest of the body) and no lungs. Cachel says that the one heart/two lungs system began to emerge about 300 million years ago, when animals first moved from sea to land to escape predators and find new sources of food.