Name:______________________________ Group members:________________________________________
Fetal Pig Dissection Assignment
Work through the lab guide and record your answers on this sheet. Each member of your group must hand in
an individual assignment. If you have any questions or uncertainties always ask before you proceed.
External anatomy
1. Sex of pig_______________________________________
2. Label the attached external picture of the pig using the terms in the lab guide.
3. Does the fetal pig have teeth? ________
Are humans born with teeth? ________
4. What age is your pig______________________________________
5. How many toes are on the feet? _____________________
Do they have an odd or even number of toes? _________________________________
6. Locate the hard palate and soft palate epiglottis pharynx
Internal anatomy organ checklist
Check the boxes beside the following organs when you have located them. Be sure to follow the sequence
given in the lab guide (you will not check off all of these organs in one day, you will have to come back to this
chart several times throughout the dissection). After you have located the organs in a system answer the
questions that correspond with that system in the “question” section of the assignment
Abdominal cavity
(Digestive system)
Diaphragm
Liver
Gall Bladder
Stomach
Cardiac sphincter valve
pyloric sphincter valve
Small intestine
Ileum
Mesentery
Mesentery arteries
Pancreas
Spleen
Cecum
Rectum
Umbilical vessels
Rugae
Villi
Thoracic Cavity
(Circulatory system)
Diaphragm
Heart
Pericardium (remove it)
Atria
Ventricles
Pulmonary artery
Aorta
Subclavian artery
Carotid arteries
Coronary artery
Vena cava
Jugular veins
Heart removed and cut open
Internal chambers of the heart
Valves
Thoracic Cavity
(Respiratory system)
Lungs
Pleura
Trachea
Thyroid gland
Larynx
Urinary System
Kidneys
Ureters
Urinary bladder
Urethra
Renal vessels
Reproductive system
Male
Scrotal sacs
testis
epididymis
penis
Female
Ovaries
Oviducts
Uterus
vagina
Labeling
Digestive system
Identify the structures on the diagram.
1. __________________________________
2. __________________________________
3. __________________________________
4. __________________________________
5. __________________________________
6. __________________________________
7. __________________________________
8. __________________________________
9. __________________________________
10. _________________________________
11. _________________________________
12. _________________________________
13. _________________________________
Identify the organ (or structure) described below
14. _____________________________ Opening (valve) between stomach and small intestine.
15. _____________________________ Stores bile, lies underneath the liver.
16. _____________________________ A branch of the large intestine, a dead end.
17. _____________________________ Separates the thoracic and abdominal cavity; aids breathing.
18. _____________________________ Membrane that holds the coils of the small intestine.
19. _____________________________ The straight part of the small intestine just after the stomach.
20. _____________________________ Empties bile into the duodenum from the gall bladder.
21. _____________________________ The last stretch of the large intestine before it exits at the anus.
22. _____________________________ Bumpy structure under the stomach; makes insulin
23. _____________________________ Lies between the two umbilical vessels.
Circulatory system
Using the descriptions given in the lab guide identify the following
terms with the number s in the diagram:
Aorta ____ Dorsal Aorta ____ Pulmonary Trunk ___
Common carotid ____ Left & Right Carotid ____
Coronary vessels ___ Left Subclavian_____
Right Subclavian _____ Right Brachiocephalic _____
Right Atrium _____ Left Atrium _____
Intercostal _____ Ventricle _____
Identify the structure.
1. ___________________________ Membrane over the heart.
2. ___________________________ Airway from mouth to lungs
3. ___________________________ Blood supply to head
4. ___________________________ Lower heart chambers
5. ___________________________ Blood supply to lower body
6. ___________________________ Muscle to aid breathing
7. ___________________________ Returns blood to heart
8. ___________________________ Large vessel at top of heart
9. ___________________________ Used to make noises
10. ___________________________ Arteries on heart surface.
Reproductive/urinary system:
Questions
Digestive system:
1. What is the function of the epiglottis?_________________________________________________________________
__________________________________________________________________________________________________
2. What is the importance of the structure inside the small intestine?__________________________________________
__________________________________________________________________________________________________
3. What is the function of the mesentery?________________________________________________________________
What would happen if the mesentery were not present?____________________________________________________
Circulatory system:
1. What chamber of the heart is most muscular?_________________________________
Why is this necessary?________________________________________________________________________________
__________________________________________________________________________________________________
2. Describe the path that blood takes through a mammals heart (list each structure it passes through)_______________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
Respiratory system:
1. Describe ways to differentiate between the esophagus and the trachea______________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
2. The heart is located very close to the gas exchange system, why is this significant?_____________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
3. Write the function of the following:
Trachea:__________________________________________________________________________________________
Lungs:____________________________________________________________________________________________
Larynx:___________________________________________________________________________________________
Diaphragm:_______________________________________________________________________________________
Pleural membrane:_________________________________________________________________________________
Reproductive/Urinary system:
1. Was your pig male of female:__________________ How do you know?_____________________________________
__________________________________________________________________________________________________
2. When people donate a kidney , the incision is made through the back instead of the abdomen, based on what you saw
in the dissection explain why this might be preferred:_______________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________