Trout Dissection-Part 1: name all the fins and their function 4. 3. 2. 1. 5. 6. Fold back the operculum to expose the four ____ and the ____________. Why are the gills so red in color? Identify the eye. Like all vertebrate eyes, the fish eye is a “_____________.” A camera eye has a __________________________. Identify the ____________, a row of sensory cells that enables the trout to sense vibrations in the water. It is like an ear. Now it’s time to begin identifying the various organs. Find the spleen and intestines. Where is the liver? Where is the stomach? Find the delicate _______. In most cases it will be torn. The swim bladder fills with various amounts of gas. This changes the _______ of the trout so it can change its _____ in the water. Above the swim bladder, and pressed against the backbone are the _______. The kidneys ________ nitrogenous wastes. Flip over the liver and find the ________. The gall bladder stores a yellowish liquid known as ____. Find the _____. The fish has a _________heart (one atrium and one ventricle.) A mammal, on the other hand, has a ______________ heart.