Safety continued . Always use a sharp blade. Do not use a scalpel that is nicked, bent, or 2. Print out th -ned. -Inel to cut through bone or getting fluid from the sp computer or mobile device. -or than 3. Clean the work area. Put on your PPE: safety glasses, gloves, - and keep them on during 1 the blue, Pre-Lab Questions Lab 6: Crayfish Dissection s on the pad. niddle of the 1. Sketch the exterior of the crayfish with the anterior and posterior ends ht spill onto labeled. In addition, label the dorsal and ventral sides of the specimen. (you picture of it and insert it here. will have to draw a crayfish on a separate piece of paper and either take a it is easy ures that are t are indicated by 2. What might be some advantages of cephalization? Can you think of any organisms that do not display cephalization? 3. How do crayfish determine up from down? (special structure) 4. Do crayfish have a closed circulatory system? Explain its specific name? 5. Examine the green gland shown in Figure 2. Based on its location, what is Post Lab Questions 1. Name two structures that differ between aquatic crayfish and terrestrial question) insects. Why might they be different? Describe two ways in which crayfish resemble other arthropods. (make sure you address all the parts of this