This dissection examines the internal and external anatomy of a stingray, a cartilaginous fish belonging to the class Chondrichthyes. Students identify organs that aid in movement, respiration, digestion, and reproduction, while learning how stingrays are adapted to their aquatic environment.

• Follow instructions provided in the links below.

281 - Sting Ray Dissection - Lab Rat Academy:

📄 Stingray Dissection - Prezi: https://prezi.com/yqd4jm7zlqy7/stingray-dissection/

• Compare the anatomy of stingrays with sharks, which share many features as cartilaginous fish.
• Contrast stingray anatomy with that of bony fish to highlight evolutionary differences.
• Create a labeled diagram of external and internal structures.

• Gloves and lab coats required.
• Be aware that stingrays typically have venomous tail barbs; ensure they are removed prior to dissection.
• Handle dissection tools with care to avoid injury.
• Dispose of biological waste properly and disinfect tools and trays after use.
• Wash hands thoroughly at the end of the lab.

• What adaptations help stingrays move efficiently in the water? (Flattened body and large fins for gliding.)
• How do spiracles benefit stingrays compared to other fish? (They allow water intake even when the stingray is resting on the ocean floor.)
• What role does the stingray’s liver play beyond digestion? (It aids buoyancy in addition to producing digestive enzymes.)
• How is the circulatory system of a stingray different from that of mammals? (It has a four-chambered heart designed for aquatic respiration rather than a double-loop system.)
• Why are stingrays classified as cartilaginous fish? (Their skeleton is made of cartilage, not bone.)