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Frog Dissection

Anatomy & Physiology. Frog Dissection. Materials. Gloves, Apron, Goggles Scissors, scalpel, forceps, probe Tray & grassfrog Safety Reminders: Tie back long hair Spit gum out Never hold specimen in your hand while cutting Always cut away from yourself. Step 1: Skin Frog.

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Frog Dissection

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  1. Anatomy & Physiology Frog Dissection

  2. Materials • Gloves, Apron, Goggles • Scissors, scalpel, forceps, probe • Tray & grassfrog • Safety Reminders: • Tie back long hair • Spit gum out • Never hold specimen in your hand while cutting • Always cut away from yourself

  3. Step 1: Skin Frog • Do not cut too deep • Skin frog torso and appendages • You can leave frog skin on the head intact

  4. Photograph and Identify homologous skeletal muscles • HW: Print and hand label with ALL members names on it

  5. Muscles required to identify: • Deltoid • Pectoralis • Triceps brachii • Rectus abdominis • External obliques • Adductor • Sartorius • Gastrocnemius • Gluteus

  6. Additionally: • Cut through the ventral muscles to veiw internal viscera • Identify as many internal organs as possible • Black and white eggs in the abdominal cavity are characteristic of female frogs • In males the testes are attached to the kidneys

  7. Reason to dissect further….

  8. Interesting Frog Facts: • Males attract females by croaking by fresh water • During Amplexus, the male frog climbs on the females back and wraps his arms around her to stimualte her to lay eggs, he fertilizes the eggs externally

  9. Clean UP • All frog tissues should be disposed of in large trash can • Rinse tray and tools • Spray tray and tools • Dry and return tray and tools to cart • Spray and wipe lab table and sink • Grab review sheets (2) to complete

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