Download Frog Dissection Pre-Lab Part 1

Frog Dissection
Pre-Lab
Part 1:
Use colored pencils and complete the following anatomy coloring pages
Frog: IV Dissection
Frog: V Heart and Arterial Systems
Frog: VII Digestive and Respiratory Systems
Frog: VIII Urogenital System (reproductive)
Hint: Color-code the vocabulary word and then find the organ that matches the letter superscript on
the drawing. Color the organ the same color as the color coded word. You will be scored on
neatness and completion for the pre-lab section.
Part 2:
Read the dissection protocol. Answer pre-lab discussion questions 1-5 on a separate sheet of paper
before performing the frog dissection.
Dissection
Review the materials list and pay close attention to all safety procedures. Understand the importance
of ethical treatment of dissection specimens. Follow the instructions on the dissection protocol. Use
all safety precautions. Clean up your lab area completely when finished.
Observation questions
Answer the following questions. You will need to answer/record some of the answers while
performing the dissection.
1. What is the Genus and species of your frog?
2. Describe the color of the dorsal and ventral surfaces of the frog.
3. How is the coloration of the frog an adaptation to its habitat?
4. How many digits are on each of the frog’s hands?
5. How many digits are on each of the frog’s feet?
6. How are the feet of a frog adapted for swimming?
7. Where is the nictitating membrane attached?
8. How is the location of the nares an adaptation to living in water?
9. Where is the tongue attached to the mouth?
10. The tip of the tongue in a live frog is sticky. What would be the advantage of this?
11. Is your frog male or female? How can you tell?
12. How many lobes does the frog liver contain?
13. What is the shape of the stomach?
14. Describe the mesentery that holds the intestines.
15. Describe the general shape, or plan, of the frog’s digestive system.
16. How does the length of the small intestine relate to its function in absorbing digested food?
17. Describe the inside walls of the stomach.
18. Describe the contents of the frog’s stomach. Is there anything in the stomach?
19. What happens when air is pumped into the lungs with the eyedropper or pipette?
20. Compare the walls of the two atria and the ventricle.
21. Describe the movement of the leg muscles as the leg is bent and straightened.
Identify and label the following parts of the frog
Circulatory, Digestive and Respiratory Systems
*Turn in the anatomy coloring sheets and all lab questions