Anus
— opening for waste removal, final structure in digestive system
Aperture
— opening in gastropoda shell through which foot protrudes
Byssus
— threads secreted by animal and used for attachment to separate (other animal, dock, rock, etc.)
Cardinal Tooth
— central tooth in the hinge of a pelecypoda used for accurately positioning shell on closure
Carnivorous
— meat eating organisms
Foot
— muscular part of the body of a mollusc used for locomotion
Gills
— soft tissue structures typical of invertebrate that aide in taking oxygen out of the water expelling CO2 and in some species feeding
Girdle
— mineralized tissue structure that encloses the 8 internal shell valves of chitons
Herbivorous
— plant eating organisms
Hermaphroditic
— containing both male and female reproductive organs
Lateral Tooth
— teeth on either side of cardinal tooth
Ligament
— holds the valves open or closed, relaxes when the valves are closed, under tension when open
Mantle
— portion of animal that has specialized functions related to shell formation
Muscle Scar
— the visible depressions in bivalves that show where the muscles attach
Operculum
— covers the large opening of gastropod shells, attached
Pallial Line
— scar line showing where the mantle was attached
Pallial Sinus
— the indentation in the pallial line where siphonal muscles were attached
Radula
— many rows of teeth on a ribbon-like structure
Siphon
— tube-like structure to take in or expel water
Spire
— the whorls at the apex excluding the body whorl
Suction Cup
— structure used for grasping objects, part of squid tentacles
Tentacles
— used for grabbing, guidance, holding on, or movement, squiod has 2 long tentacles and 8 arms, octopus has 8 arms
Umbo
— beak of the shell, in pelecypoda, an obvious projection near the hinge line
Valve
— one of the 2 shells of a bivalve
Whorl
— one turn or coil in a gastropoda shell, body whorl is the largest and the last one made, animal lives in latest whorl, may seal it off, previously made sections aids in bouyancy
