Perch Dissection Each checkpoint is counted as equal parts of your lab grade: Checkpoint #1 – External Anatomy Checkpoint #2 – Gill Structures Checkpoint #3 – Internal Anatomy Checkpoint #4 – Clean Up!

MAJOR duties of various TEAM Members!!   Head Dissector 1. acquire tray & specimen; prep for specimen dissection 2. incisions with direction after conferring with team members 3. identification & tagging of required structures 4. assist with clean up of table and materials (cadaver & tissue disposal)   Assistant Dissector 1. assist with prep & organization of tags/labels 2. assist with determining incision locations 3. “hand off” of required tools from the dissecting kit 4. assist with reading of lab procedures & specific organ system directions 5. assist with clean up of table and materials (cadaver & tissue disposal)

MAJOR duties of various TEAM Members!!  Reader 1.read lab procedures & specific organ system directions 2.keep field guide, lab papers, and table dry & clean 3.assist with reading of lab procedures & specific organ system directions 4.assist with clean up of table and materials (soap, rinse, & thorough drying of tray & table - including sink)  Clean Up 1.assist with prep & organization of tags/labels 2.assist with reading of lab procedures & specific organ system directions 3.assist with clean up of table and materials (soap, rinse, & thorough drying of dissecting kit instruments)

Preparation & Examination  Cut out external labels for pin tags.  Locate & tag the major external anatomical parts.  CHECKPOINT #1  Remove several scales & observe under the dissecting microscope.

Internal Dissection  Locate & tag the gill structures. (Figure 2 – previous slide) (Figure 2 – previous slide)  CHECKPOINT #2  Locate & tag the major external anatomical parts.  CHECKPOINT #3 Cut along the blue line... Only cut through scales, muscles, & skin. Take special care not to cut too deep!

Anterior View 1. Gills 2. Heart 3. Liver 4. Pyloric caeca 5. Small intestine 6. Stomach 7. Swim bladder

Posterior View 1. Swim bladder 2. Gonad 3. Large intestine 4. Urinary bladder 5. Anus

Close-up: Body Cavity Close-up: Body Cavity Muscle Swim Bladder Liver Spleen Gastric Cecae Eggs Stomach Ovary Small Intestine

Can you identify the parts?

Perch Dissection COMPLETED! CHECKPOINT #4 CLEAN UP!