Name: _______________________________           Date: ______________           Period: ___________

 

Dissection of the Fetal Pig

Determining the sex of the pig

1.  Label the anterior and posterior ends of the pig on the diagram above.  What are the dorsal side and the 

     ventral side of the pig? _______________________________________________________________

Thoracic Cavity
 
2)  How do you determine the age of a fetal pig? ___________________________________________

Text Box: 3)  How can you distinguish a female pig from a male pig? ________________________________

4.  What is the function of the urogenital opening in the male? _________________________________  _____________________ Where is this structure in the female? ________________________________

Thoracic Cavity

 

5.  Of the organs present in the thoracic cavity, which ones are associated with the respiratory system?     ________________________________ _________________________________________

6. How does the diaphragm help the lungs with respiration?  ______________________________

7. What would happen if the coronary artery became blocked? _________________________________

8. In an adult, which side of the heart receives oxygen-poor blood?  __________ oxygen-rich? _________

9) How does the fetal pig heart differ from the adult pig heart?___________________________________ _____________________________________________________________________________________

10. Starting with the right atrium, describe the flow of blood through the heart in an adult, include the vena cava and the aorta. _________________________________________________________________

11. If you push aside the lungs you can see three tubes: the vena cava, esophagus, and aorta.  How can

      these three be distinguished from one another? ____________________________________________

 

Abdominal Cavity

12. Where is the gall bladder? _____________________________________________________

13. a) What is the caecum and how do you find it? ____________________________________________

      b) The caecum is similar to what vestigial organ in humans? _________________________________

14. What is the function of the spleen?______________________________________________________

15. List the organs that move food through the digestive tract in their correct order. __________________

      __________________________________________________________________________________

16. How do you find the pancreas? ________________________________________________________

17. Would you expect to find food in the stomach of the fetal pig?  Why? __________________________

18. What is the structural difference between the trachea and esophagus? _________________________ ___________________________________________What is the function of these structural differences? __________________________________________________ Which is most ventral? ______________

19) How long is the small intestine? ______________________

Female Reproductive and Urinary System

Text Box:

20. a) What does the renal artery connect to?  _____________________________________

      b) What is carried through the renal artery? _______________________________

21. Label the uterus and bladder in the sketch to the left.

22. Describe the path of an egg through the reproductive system from its production to its release from the  body. __________________ __________________________________________________________________________

23. Describe the path of urine from its formation in the kidney until it exits the female body in an adult.       ______________ _____________________________________

Male Reproductive and Urinary System

 

Text Box: 24. Why are scrotal sacs located outside of the male body?  ___________________________ _____________________________________     

25. The urogential opening in the male releases what two fluids?  ________________________________

26. Trace the path of sperm from its formation until it exits the male body. ______________ __________________________________________________________________________

 

 

Nervous System

27. How is the fetal skull different from an adult skull?_________________________________________

28. a) Where is the medulla oblongata located? _______________________________________________

      b) What is the function of the medulla oblongata?  _________________________________________

          ________________________________________________________________________________

29. a) Which part of the brain is known as “gray matter”? ______________________________________

      b) Why does it have that nickname? ____________________________________________________

      c) What is the function of gray matter? _________________________________

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Here you go.

 

-----Original Message-----
From: Giffin, Lani
Sent: Wednesday, May 23, 2007 10:05 AM
To: Wu, Judy
Subject: RE: some pig questions

 

Hey Judy,

 

So, in a male fetal pig the penis is internal. 

The fetal pig heart has two shortcuts - the foreman ovale (hole between right and left atrium) and ductus arteriosis (hole between pulmonary artery and aorta).  These serve as shortcuts so that some blood can bypass the lungs, which are not used in a fetus, and go out to the body more quickly.  These shortcuts close shortly after birth.

Fetal skull....hmmm...more soft?  Not as hard/thick?  I think that's what we were getting at.

 

Lani