Frog Dissection

Purpose

The purpose of this lab activity is to help you learn the anatomy of a frog and give you a better understanding of the anatomy of vertebrate animals in general, including humans.

After completing this dissection, you should be able to:

• Correctly identify the locations involved in the dissection procedures, and
• Correctly identify the locations of the major organs within the body cavity of a frog.

Materials

• Preserved frog
• Dissection Pan
• Dissection kit
  • Scalpel
  • Forceps
  • Scissors
  • Dissecting Pins
  • Probes

Table of Contents

1. External Anatomy
   1. Eyes
   2. Nictitating Membrane
   3. Tympanum
   4. External Nares
   5. Appendages
2. Mouth
   1. Internal Nares
   2. Tongue
   3. Eustachian Tube
   4. Maxillary and Vomerine Teeth
   5. Glottis
   6. Esophagus
3. Setup for the Dissection
   1. Pinning the Frog
   2. Skin incisions
   3. Muscle incisions
4. Respiratory System and Liver
   1. Vocal Cords
   2. Lungs
   3. Liver
   4. Gallbladder
5. Circulatory System
   1. Heart
   2. Left Atrium
   3. Right Atrium
   4. Ventricle
6. Digestive System
   1. Esophagus
   2. Stomach
   3. Small intestine
   4. Cloaca
   5. Anus
   6. Pancreas
   7. Spleen
   8. Fat Bodies
7. Urogential System
   1. Kidneys
   2. Urinary Bladder
8. Male Anatomy
   1. Testes
   2. Fat Bodies
9. Female Anatomy
   1. Ovaries
   2. Oviducts
10. Cleanup
    1. Disposal of frog
    2. Clean equipment