GUIDE TO A FROG DISSECTION - PowerPoint PPT Presentation

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GUIDE TO A FROG DISSECTION

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GUIDE TO A FROG DISSECTION
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GUIDE TO A FROG DISSECTION

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  1. GUIDE TO A FROG DISSECTION By Mr. Berg and Ms. Cerletty For this dissection Mr. Berg will be wearing black gloves in an attempt to be super cool.

  2. Incisions- Step 3 The skin of the frog is extremely thin. If you are cutting through muscle and exposing internal organs STOP. You have cut too deeply.

  3. Observing the skin- Step 5 Skin flap. You may remove this. Blood vessels Abdominal muscles

  4. Cutting through the muscles of the abdominal wall- Step 6 Do not drink the juice. Down the sink with it!

  5. For female frogs only!

  6. Fat bodies

  7. Liver Liver Chicken Dinner

  8. Gallbladder

  9. Stomach Stomach Pyloric sphincter

  10. Small Intestine

  11. Large Intestine

  12. Spleen

  13. Kidney’s and Bladder This is where you should find the bladder. We destroyed ours by not being careful. If you find yours let us know and we’ll add it to this awesome power point.

  14. Male reproductive structures

  15. Female reproductive structures. F Eggs G Oviduct Do you know what E is?

  16. Heart

  17. Lungs

  18. Removing the stomach- Step 9 Cut at the pyloric sphincter and the esophagus Note the folds in the stomach which allow for expansion. Watch out for live crayfish!

  19. Removing and measuring the intestines- Step 10 and 11 Always do your lab in pencil.

  20. Comparing a frog and human heart