opening where food enters (digestive)
carries food from mouth to stomach (digestive)
has teeth to grind food and food mixes with digestive juices (digestive)
absorbs digested food (digestive)
collects undigested material (digestive)
releases cellular waste (digestive)
removes cellular waste from blood (excretory)
releases cellular waste (excretory)
carries blood to all parts of body (circulatory)
collects the blood to take to the gills (circulatory)
collects the blood around the heart (circulatory)
the openings in the heart where blood enters (circulatory)
gas exchange (respiratory)
pumps water over the gills (respiratory)
hold moisture around the gills (respiratory)
control center (nervous)
ventral nerve chord
carries impulses (nervous)
mass of nerve cells (nervous)
produce sperm or egg (reproductive)
hearing and equilibrium (1p)
touch, taste and smell (1p)
crush and chew food (1p)
hold food to be crushed and chewed (2p)
hold and tear food (3p)
food getting and protection (1p)
forward swimming and hold eggs in reproduction (5p)
flippers used in backwards swimming (1p)
backward swimming (1)
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