Anterior - Applies to the front, or head, of an animal, Posterior - Pertains to the tail, or rear, of the animal, Dorsal - Pertains to the upper surface of an animal, Ventral - Relates to the lower, or abdominal, surface, Morphology - The structure, or form, of fish, Physiology - The function of the body systems, Anatomy - The internal or external structures of an animal, Lateral line - Nerves that detect water vibrations and motion, Operculum - Protective, moveable flap of skin over gills, Dorsal fin - Fin on the upper surface of an animal, Swim bladder - Gas filled organ that maintains buoyancy, Gill filament - Contains lamellae where oxygen and carbon dioxide are exchanged, Vertebra - Bones through which the spinal cord passes, Foot - Muscle that clams use for digging, Exoskeleton - Hard covering that supports and protects the bodies of crustaceans, Molting - Shedding of the exoskeleton,

Assorted physiology of finfish, crustaceans, and mollusks

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