Name:__________________________
Group:___________ Block:____________
Rana pipiens Dissection Assessment Sheet 3324
Directions: When you are ready to identify a group of organs (in the groups below), call
your teacher over. Each individual member of each group must identify the organs. If an
individual misses an organ, they must wait until the next circulation to identify that group
again to receive credit.
Answer the questions along the way. They are set up so that they go by system.
For each of the following organs; identify where it is on the frog as well as list it’s function.
EXTERNAL ANATOMY
Group 1: Directional Terms
Dorsal______
Ventral______
Superior______
Inferior______
Group 2: External
Eye ______ _________________________________________________________
nictating membrane ______
_____________________________________________
tympanic membrane _____ _______________________________________________
External nares _____ ____________________________________________________
Label the external anatomy diagram
1. Describe how a frog jumps.
2. Are the hindlegs or forelegs more important in jumping?
3. Is the skin of the frog smooth or rough?
4. Is the skin of the frog moist or dry?
5. Describe the color of the dorsal and ventral surfaces of your frog.
6. How many digits (fingers) are on each of the frog’s hands?
7. How many digits are on each of the frog’s feet?
8. Is your frog male or female? How can you tell?
9. How are the feet of a frog adapted for swimming?
10. How is the coloration of the frog an adaptation to their habitat?
11. How is the location of the nares and adaptation to living in water?
Group 3: Oral Cavity
Internal nares_____ ________________________________________________________
vomerine teeth ______ _______________________________________________________
eustation tubes_____ ________________________________________________________
Eye sockets_____ ___________________________________________________________
tongue _____ ______________________________________________________________
Glottis _____ ______________________________________________________________
Maxillary teeth _____ ________________________________________________________
Label the Diagram
1. Where is the tongue attached to the mouth?
2. Where is the nictating membrane attached?
3. The tip of the tongues is very sticky. What would be an advantage of this?
INTERNAL ANATOMY
Cut/pinned properly (10 points) ______________
Do you have ovaries? ______________ If so carefully remove the eggs and put them in the
waste container.
Group 4: Digestive System
Liver _____ _______________________________________________________________
Gallbladder _____
________________________________________________________
Stomach _____ _____________________________________________________________
1. How many lobes does the liver contain?
2. What is the shape of the stomach?
3. Describe the mesentery that holds the intestines.
Small intestines _____ _____________________________________________________
Mesentery _____ __________________________________________________________
Large intestines _____ ______________________________________________________
Group: 5 Digestive System part 2
Espohagus _____ _________________________________________________________
pancreas _____ ____________________________________________________________
spleen _____ ______________________________________________________________
Cloaca _____ _____________________________________________________________
Anus _____ _______________________________________________________________
Gullet opening ______ ______________________________________________________
Go to the teacher’s desk and measure the length of the digestive system that has been laid out
for you. Examine the stomach’s contents.
1. How long is the digestive system?
2. What do you note about the contents of the stomach?
Group 6: Respiratory System
Lungs ______ _____________________________________________________________
Trachea ______ ____________________________________________________________
Glottis ______ _____________________________________________________________
1. What happens when air is pumped into the lungs?
Group 7: Circulatory System
Heart ______ _____________________________________________________________
Coronary Artery ______ _____________________________________________________
Group 8: Urogential System
Testes _____ ______________________________________________________________
Ovaries ______ _____________________________________________________________
Fat bodies ______ ___________________________________________________________
ANALYSIS AND CONCLUSION
Type and attach an analysis and conclusion. You should, in your conclusion compare the
human and frog anatomy as well as list some adaptations that allow frogs to transition from
living in the water to living on land. This conclusion should be at LEAST one half page
typed single-spaced OR one full page typed, double-spaced (with normal set margins and
font 12, times new roman).
Lab Extension: Answer each question, typed, on separate paper. This is the culminating
activity of your Anatomy unit. You may include diagrams, but must also explain your
thoughts in words.
1. Explain how the digestive system (mouth, pharynx, esophagus, stomach, small and large
intestines, rectum) converts macromolecules from food into smaller molecules that can be
used by cells for energy and for repair and growth. In your answer, describe the different
parts of the digestive system, what type of digestion occurs there and how each contributes
to gaining energy for growth and repair.
2. Explain how the circulatory system (heart, arteries, veins, capillaries, red blood cells)
transports nutrients and oxygen to cells and removes cell wastes. Describe how the kidneys
and the liver are closely associated with the circulatory system as they perform the
excretory function of removing waste from the blood. In your answer, discuss how kidneys
remove nitrogenous wastes, and how the liver removes many toxic compounds from blood.
3. Explain how the respiratory system (nose, pharynx, larynx, trachea, lungs, alveoli)
provides exchange of oxygen and carbon dioxide. Include where gas exchange actually
takes place and the role of the capillaries that rest on the alveoli.
4. Explain how the nervous system (brain, spinal cord, sensory neurons, motor neurons)
mediates communication among different parts of the body and mediates the body’s
interactions with the environment. Identify the basic unit of the nervous system, the neuron,
and explain generally how it works. You may include a diagram in this answer to help you,
but you also need to put your thoughts into words.
5. Explain how the muscular/skeletal system (skeletal, smooth and cardiac muscles, bones,
cartilage, ligaments, tendons) works with other systems to support the body and allow for
movement. Also include a brief discussion on how bones produce blood cells and how they
work with the endocrine system in storing and releasing calcium.
6 Explain how the sexual reproductive system allows organisms to produce offspring that
receive half of their genetic information from their mother and half from their father and
that sexually produced offspring resemble, but are not identical to, either of their parents.
Include in your answer, a brief overview of fertilization.
7. Discuss how communication between cells is required for coordination of body functions
in reference to the nervous system and endocrine system. Explain how the nerves
communicate with electrochemical signals, hormones circulate through the blood, and
some cells produce signals to communicate only with nearby cells.
8 . Recognize that the body’s systems interact to maintain homeostasis. Describe the basic
function of a negative feedback loop.