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.
You may need to use pins to keep the body tube open. 4. Use the illustrations and Table 11.2 to identify the following selected internal structures of the squid and familiarize yourself with their functions: gills, esophagus, stomach, pancreas, liver, anus, testis (male only), ovary (female only), ink sac, siphon retractor muscles, kidney, systemic. heart, branchial hearts, caudal (posterior) vena cava, and . cranial (anterior) vena cava. Cephalopods have the most efficient circulatory system of all molluscs, supporting the relatively high metabolic needs associated with swift-moving, active predators. They are unique among molluscs in having a