Shark dissection
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Shark Dissection. Each Dissection Group:. One member retrieves their shark Block 3: Hood Block 4: Cart One member retrieves a laptop computer Be sure to be working on questions while making cuts. Exterior Anatomy Checklist. Nares Spiracles Mouth Gill slits Cloaca Rostrum

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Shark Dissection

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Shark dissection

Shark Dissection


Each dissection group

Each Dissection Group:

  • One member retrieves their shark

    • Block 3: Hood

    • Block 4: Cart

  • One member retrieves a laptop computer

  • Be sure to be working on questions while making cuts


Exterior anatomy checklist

Exterior Anatomy Checklist

  • Nares

  • Spiracles

  • Mouth

  • Gill slits

  • Cloaca

  • Rostrum

  • Dorsal spines

  • Dorsal fin

  • Caudal fin

  • Pelvic fin

  • Pectoral fin


Part 1 pre lab questions

Part 1: Pre-Lab Questions

  • 1. How is the shark’s nose different from our own?

  • 2. Why are the Spiracles important?

  • 3. The mouth of the shark is part of which organ system(s)?

  • 4. What is the function of the Gill Slits?

  • 5. What does the Lateral Line do?

  • 6. What two organ systems include the cloaca?

  • 7. Since the Clasper is only present on male dogfish sharks, what gender is your shark?

  • 8. How many fins does a dogfish shark have?

  • 9. What’s another name for the Rostrum?

  • 10. Where are the Dorsal Spines located?


2a internal muscles

2A: Internal (Muscles)

  • Place shark in tray, ventral-side up.

  • Cut shallowly from opening to jaw line.

  • Remove skin from shark’s head

  • Expose muscles around head/jaw


Part 2a questions

Part 2A Questions

  • 1. How did you position your shark to remove the Dorsal Spines?

  • 2. How did you position your shark once you remove the Dorsal Spines?

  • 3. In step 2 you made an incision from where to where?

  • 4. Was the shark’s skin as thick as you expected it to be? Why or why not?


Internal anatomy

Internal Anatomy

  • Place shark in tray, ventral-side up.

  • Cut through muscular wall (gently) from cloaca to jaw

  • Make cuts across the shark to create flaps

  • Open shark up and pin it down to pad

Be gentle so as not to damage internal organs!!


Internal anatomy checklist 2b

Internal anatomy Checklist 2B

  • Esophagus

  • Stomach

  • Duodenum

  • Liver

  • Pancreas

  • Spleen

  • Rectum


Part 2b questions

Part 2B Questions

  • Use your textbook and internet resources to describe the function of the following 7 organs:

    • Esophagus

    • Stomach

    • Duodenum

    • Liver

    • Pancreas

    • Spleen

    • Rectum

  • How does the ratio of digestive surface to shark size compare to the digestive surface to body size ratio in humans?


Part 2c internal anatomy

Part 2C Internal Anatomy

  • Gentle cut up to sharks’ jaw and over to create flaps.

  • Pin flaps out of the way.

  • Cut behind gills … gently!!


Part 2c internal anatomy checklist

Part 2C Internal Anatomy Checklist

  • Heart

  • Gill rakers

  • Ventricle

  • Atrium

  • Teeth

  • pharynx


Post dissection

Post-Dissection

  • Post-lab questions #1-23


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