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Fetal Pig Dissection Worksheet
Part A: External Anatomy & Oral Cavity
1. How long (metric) is your fetal pig?
2. What is the age of your fetal pig?
3. What sense organs are located on the head & in the mouth?
4. How many toes are present on each foot?
5. Are the hooves split or fused? What is it called?
6. What is the sex of your fetal pig?
7. What are the paired nares?
8. What is the function of the papillae?
9. Label the following diagrams:
Part B: The Digestive System
1. Where does the digestive tract start & end?
2. What is the purpose of saliva?
3. What is the function of the epiglottis?
4. Fetal pigs receive nourishment from their mother through the___________________________
5. The stomach of a fetal pig will not be empty because they also drink_______________________
6. How many lobes does the pig’s liver have?
7. Give the function of the pig’s liver
8. Give the function for the gall bladder
9. Give the function of the pancreas
10. Name the membranes that attach the internal organs to the body wall
11. What is visible underneath the liver?
12. Animals, like pigs, with multiple stomachs are called
13. Name the ridges inside the stomach & give their function
14. Where are these sections of the stomach found:
a. esophageal?
b. cardiac?
c. pyloric
15. Name and give the function for each of the stomach’ sphincters.
16. Name the 1st section of the intestine & give its function.
17. What is the jejunum?
18. What is the ileum?
19. Give the function of sphincter & where can they be found?
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Food leaves the stomach as a soupy, partly digested material called____________________.
Another name for the large intestine is __________________________________________.
What is the function of the large intestine?
The straight, terminal part of the large intestine is the ______________________________.
Length of small intestine (cm) ___________________________________
Length of large intestine (cm) ___________________________________
What part of the intestine stores solid wastes and where is it located?
Why is the mesentery a purplish color?
What is the function of the umbilical arteries?
Which organ filters out and destroys dead blood cells?
Label the following diagram.
Part C: The Respiratory System
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The lungs are found in what body cavity?
Name the tissue that covers and protects the lungs
Where is the epiglottis & what is its function?
Where is the pharynx located?
Give the function of the larynx.
What keeps the trachea from collapsing?
Where is the diaphragm & give its function.
Does the diaphragm function in the fetus? Explain
Name the large tubes that enter the lungs.
Smaller tubes that branch from these?
Name the air sacs for gas exchange?
Why do the lungs appear collapsed in the fetus?
Trace the pathway of air into the pig by listing the structures it goes by
Explain how does the diaphragm works to perform its function?
In what 2 systems does the epiglottis function?
Label the following diagram:
Part D: The Circulatory System
1. What functions are performed by the circulatory system?
2. What does the thymus gland do? What happens to it later in life?
3. What causes heart attacks?
4. What is the pericardium?
5. What differences between the atria and the ventricles can you feel with your fingers?
6. Into what heart chamber does the superior and posterior vena cava open?
7. From what chamber does the aorta arise?
8. To what structures do the pulmonary arteries lead?
9. Why does the ductus arteriosus close off at the time of birth?
10. What is the function of coronary circulation?
11. What results when coronary circulation is prevented in humans?
12. Describe, in detail, the interior of the lungs.
13. By listing structures it goes through, trace the pathway of blood takes around the body including both the systemic and pulmonary
circulations
14. Label the parts of the following diagram:
Part E: The Urogenital System
***Be sure to observe a pig of both sexes.
1. In order, name the structures through which urine passes from the kidneys.
2. In order, name the structures through which sperm passes from the testes.
3. In order, name the structures through which an egg would pass from the ovary.
4. What are the kidneys responsible for?
5. What else do the kidneys do?
6. Which blood vessel carries unfiltered blood to the kidneys?
7. What is the function of the ureters?
8. Where is the urine stored?
9. How does the urine exit the bladder?
10. What are the functions of the ovaries?
11. What happens to fertilized eggs inside of the uterus?
12. What are the functions of the testicles?
13. Label the parts of these two diagrams.
Part F: The Nervous System
1. Name the protective membranes covering the brain.
2. The olfactory lobe at the front of the brain controls what?
3. What part of the skeletal system protects the brain?
4. Name the largest area of the brain?
5. How many hemispheres does this lobe have?
6. Give the function of the following:
a. Cerebrum?
b. Cerebellum?
c. Medulla oblongata?
d. Spinal cord?
7. Label the parts of the brain and spinal cord: