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Fetal Pig Dissection
USE ANY AVAILABLE RESOURCES TO ANSWER THE FOLLOWING
Prelab
1. What are unborn pigs called?
____________________________________
2. How is their age (length of gestation) determined?
3. How long does full gestation take?
____________________________________
4. Classify the pig:
K__________________________________
P__________________________________
C__________________________________
O__________________________________
F__________________________________
G__________________________________
S__________________________________
5. Approximately how many piglets does a sow have in a litter? ______________________
6. Is a pig a biped or quadruped? Explain. ________________________________________
7. What word means:
Pertains to the head?
Forward?
Toward the snout?
Pertains to the tail?
Toward the tail?
Toward the backbone?
Toward the belly?
Toward the side?
Toward the midline?
Near the reference point?
Far from the reference area?
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
8. What are these areas called:
head area?
neck area?
upper trunk?
middle trunk?
lower trunk?
tail area?
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
9. Symbol for male? ____________
Symbol for female?___________________
10. How do you determine the sex of your fetal pig? _________________________________
11. Is the pig digitigrade, unguligrade, or plantigrade? Explain.
12. Are pigs herbivores, carnivores, or omnivores? Explain. __________________________
13. Another name for nostrils?
____________________________________
14. Long, external fold of the ear?
____________________________________
15. Why is the fetal pig a good specimen to dissect? _________________________________
16. Tissue that makes up skin?
main appendage of skin?
____________________________________
____________________________________
Go to the following link and complete the following:
http://www.whitman.edu/academics/courses-of-study/biology/virtual-pig/
17. Label the following drawing:
Click on “Virtual Fetal Pig Dissection”
Go to “Anatomical References”
18. List the four regions on a pig from tail to head.
a. __________________________________
b. __________________________________
c. __________________________________
d. __________________________________
19. Draw a fetal pig in the box and label the following areas: Anterior, Posterior, Dorsal,
Ventral
Click on “Sexing your pig.” Then click on “Is it male or female.”
20. How do you know if a pig is male or female?
_______________________________________________
___________________________________________________________________________
____________
Click on the “Digestive System.” Then click on the pig’s head. Keep clicking forward until you
reach the page titled, “oral cavity.” Click on the snout to continue.
21. Where are the hard and soft palate located?
5. Click on “Pharynx.”
function of the epiglottis?
What is the
Draw them below.
____________________________
____________________________
____________________________
____________________________
Click on the abdomen. Keep clicking on the forward button until you reach the section titled,
“Lift the Liver”
6. What is under the liver? ____________________________
7. How long is the small intestine? ________________________
8. The large intestine is ( shorter , longer ) than the small intestine. Circle the correct
answer.
9. Write the function for each of the following.
Click on the “excretory system.”
10. Describe how the kidneys look and where they are located.
___________________________________________________________________________
_________
11. Relative to the kidneys, where are the ureters located?
___________________________________________________________________________
_________
12. Relative to the ureters, where is the bladder located?
___________________________________________________________________________
_________
Click on the “circulatory system.” Then click on the pig. You can rotate the pig 90 degrees for a
side view.
13. Where is the pericardial sac located?
14. Relative to the heart, where are the lungs located?
15. Draw and label a heart with the following terms: right atrium, right ventricle, left atrium,
left ventricle, aorta, coronary artery.
Using arrows, show the path
of blood from the heart, to the
Lungs
lungs, and back to the heart
going through the appropriate
chambers.
16. Deoxygenated blood enters the heart through the ____________________________, then
goes to the _________________________. It gets pushed into the
___________________ where it gets oxygenated. Then it returns to the heart through the
_______________________________, then goes to the
________________________________. Then it is pumped through the
_______________________ to the rest of the body.
Click on “reproductive system.”
17. What hormone(s) are produced by the ovaries?
____________________________________________
18. What hormone(s) are produced by the testes?
_____________________________________________
Click on “respiratory system.”
19. List the path of air from the mouth to the aveoli.
Function
Small
intestine
Large
intestine
Gall bladder
Spleen
Pancreas
Mouth
________________
________________
bronchi
Alveoli
___________________
20. What is the function of the diaphragm?
___________________________________________________________________________
__________
Click on “nervous system.” Then click on the cranial section.
21. What membrane covers the brain? __________________________________
22. Draw/describe the lobes of the brain. Label the following lobes: frontal, temporal,
occipital, parietal
Frontal: ___________________________________________
Temporal: ________________________________________
Occipital: _________________________________________
Parietal: __________________________________________
23. How does the human brain differ from the brains of most mammals?
24. What is the function of the corpus callosum?