Vocabulary

Bivalve - mollusk that lives within a shell made of two sections that are hinged together
Cecum - part of the digestvie tract, a pouch connected to the large intestine and the ileum
Cephalopod - marine mollusk whose head is attached to its foot, which is divided into tentacles
Chromatophores - pigment that contains light-reflecting cells, aids in camolouge
Gastropod - mollusk that moves by mean of a broad, muscular foot located on its ventral side; usually has one-piece shell for protection
Hectocoylus - tentacles of a male that is used for fertilization of the female's eggs
Hemocyanin - a blue respiratory pigment in the plasma
Hemoglobin - pigment that carrys oxygen in red blood cells and gives a red coloring
Hyponome - muscular funnel where water is drawn for locomotion
Foot - muscular structure in mollusks that usually contains the mouth and other feeding structures
Gill - filamentous respiratory structure in an aquatic animal
Mantle - thin, delicate layer of tissue that covers most of a mollusk's body and secretes the shell when one is present
Mollusks - soft-bodied invertebrate animal that is characterized by an internal or external shell,a foot, a mantle, and visceral mass; members of phylum Mollusca
Open Circulatory System - system in which blood does not always travel inside blood vessels
Nephridia - simple tube-shaped excretory organ used to remove ammonia from the blood and release it from the body
Radula - in some mollusks, layer of flexible skin with hundreds of tiny teeth used for feeding
Shell - structure in mollusks made by glands in the mantle that secrete calcium carbonate
Visceral Mass - structure in mollusks that contains the internal organs