Directions: You will dissect a real frog next class. To prepare, you will complete a virtual dissection today. WEAR CLOSED-
TOE SHOES NEXT CLASS!
1. Go to: thebiorealm.wordpress.com and find the post: VIRTUAL FROG DISSECTION
2. Click on the link: Virtual Dissection . View all three sections Introduction, External Anatomy, and Internal Anatomy and answer the following questions.
Introduction:
1. Why dissect? Give at least one reason.
2. What 5 things will you learn through this virtual dissection?
3. All vertebrates have what kind of bone? ________________________________
4. What are the different organisms that are vertebrates? (List at least 5.)
5. What are the 3 main stages of a frog’s life?
6. What is the scientific name of a leopard frog used in this dissection? ___________________
7. What are the dissection tools used for dissection? List at least 3.
External Anatomy:
8. The spotted or top side of the frog is called the d__________ side.
9. The bottom or underside of the frog is called the v___________ side.
10. Define anterior:
11. Define posterior:
12. The main body part of the frog is called the t____________.
13. What is the function of the skin of the frog?

14. What is the function of the tympanic membrane?
15. What is the function of the cloaca?
16. How many toes does a forelimb have?
17. How many toes does a hindlimb have?
18. What is the function of the hindlimb?
Internal Anatomy:
Initial cut
19. What side of the frog do you make your initial cuts on?
20. What two layers of the frog do you need to cut and move out of the way to view the frog’s internal organs?
Digestive System
21. What are the functions of the following: a. Liver - b. Stomach - c. Small Intestines -
Respiratory System
22. What two organs in the frog are involved in gas exchange?
23. The glottis connects the mouth of the frog to the ________________.
Circulatory System
24. What is the function of capillaries?
25. What is the function of arteries?
26. What is the function of veins?
27. A frog heart has _____ chambers. A human heart has ______ chambers.
Reproductive System
28. How does a frog egg become fertilized?
Excretory System
29. What filters and cleanses blood of unwanted wastes? ________________
30. What carries liquid waste away from the kidneys? _______________
31. What is the temporary storage place of liquid waste called? _____________
32. What is the opening through which liquid and solid wastes leave the frog’s body? _______

Nervous System
33. Two largest lobes of the frog’s brain is the ___________________.
34. ______________________ lobes control the sense of sight.
Muscular System
35. Muscles in the thigh move the _____________ leg.
Skeletal System
36. The axial region is made up of the skull and spine and includes ___________ bones.
37. The _____________________ region is made up of the forelimbs and hindlimbs and has 112 bones.
38. Color each part of the frog. o
A. Esophagus
(yellow) o
C. Stomach
(purple) o D. Pancreas
(orange) o F. Cloaca
(black
) o H. Lung
(dark blue) o I + G + B Heart
(red) o J. Liver
(brown) o K. Gallbladder
(lt. green) o L + E. Small Intestine
(Dark green) o M. Large Intestine
(lt. blue
) o
N. Artery
(pink)

A. Tongue
(yellow)

B. Maxillary teeth (many)
(blue)

C. Vomerine teeth (2)
(red)

D. Internal nostrils (2)
(green)

E. Esophagus
(purple)

F. Eustachian tubes (2)
(orange)
C
B
F
D
E
A