Name the appendages found on the thorax of the crayfish and tell the function of each. The structure and function of the hepatopancreas of a terrestrial isopod, Armadillidium vulgare. – Defense, fighting and capturing prey 6. The abdomen of the crayfish … Dissection 101: Crayfish Quiz #7. Although the crayfish has an inflexible cephalothorax, the crayfish is classified as a segmented animal. The structure of crayfish is similar to those of the lobster, featuring a hard calcium shell, claws and a pair of antennae used as sensory organs. Break food apart 3. Male, female or both? Mandibles 2. The eggs stick to the female's long swimmerets. #8. Click. Label the drawing of the crayfish. Chelipeds 5. The function of the exoskeleton is to protect the internal organs and support the crayfish because it is an invertebrate. It also has swimmerets under the tail to cover the egg pore and to swim faster. 8. 8. Students will be able to identify and explain the structure and function of the internal and external anatomy of the crayfish. The crayfish, sometimes called a crawfish or a crawdad, is a crustacean, closely related to the lobster and the shrimp. The cephalothorax is covered by a thick armor called a carapace. They also have walking legs to walk. Locate the cephalothorax and rostrum. What is a function of the structure indicated. Crustacean - Crustacean - Form and function of internal features: The crustacean nervous system consists basically of a brain, or supraesophageal ganglion, connected to a ventral nerve cord of ganglia, or nerve centres. The body of the crayfish consists of a fused head and thorax: the cephalothorax. Extending from the carapace is a pointy structure called the rostrum. A function is the action or purpose of a structure… 10. 9. The fine structure of the hepatopancreas of the isopod, Armadillidium vulgare was studied in intact and in experimentally treated animals. With their curiosity now piqued, students returned to their resources to learn the crayfish structure’s names and functions. Side view Each structure has a function in the crayfish’s life. Soon they were correctly labeling their illustrations of crayfish and using terms appropriately in discussion. Name the structure indicated. The crayfish have two large pincers which are used for defending itself, holding food, and pinching predators. Miyawaki M, Yamamoto Y. This 3-D crayfish dissection anatomy model can be used as a dissection-free crayfish exploration, a pre-dissection study tool, or even as a summative assessment for comparative anatomy. Name the structure indicated. This 2-day lesson includes: Name the structure indicated. The Red Swamp Crayfish's unique structures perform many functions. Record students’ questions about the crayfish to the KWL chart. At first, students did not understand that a structure’s design often reflects or suggests its function. 11. 9. Name the appendages on the abdomen of the thorax and tell the function of each. After reviewing the structures on the sheet, tell students: Each of the structures you observed is useful to the crayfish in some way. What is a function of this structure? 1. Why? Name the structure indicated (2 parts). Crayfish Dissection Quiz: Complete the following questions. What is a function of this structure? Gills 4.

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