Name: _______________________________ Date: ________________ Period: _______
Virtual Fetal Pig Dissection Day 2:
Circulatory and Respiratory Systems
Go to the following website:
http://www.whitman.edu/content/virtualpig/circulatory-system
Read through the text on each page and also follow along with the instructions below.
Answer the questions in the spaces provided.
The Circulatory System:
1.
What is the circulatory system responsible for?
Click “here” to continue.  The Thoracic Cavity
2. What is the tissue sac that encloses the heart called?
3. What are found on either side of the heart?
4. What does the thymus gland do? What happens to it later in life?
Click “Next: The heart and lungs” to continue”  The Heart and Lungs
5. What blood vessel runs along the ventral surface of the heart?
a. What kind of blood does this vessel supply?
b. What causes heart attacks?
6. What does the septum do?
Click “Next: The heart and lungs removed”  The Heart and Lungs Removed
7. Label this picture of the removed heart:
Click “Next: The aorta”  The Aorta
8. What chamber of the heart pumps blood into the aorta?
9. What kind of blood is it (oxygenated / deoxygenated)?
Click “Next: Pig heart cross section”  Pig Heart Cross Section
10. Why does the left ventricular wall become thicker?
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Next, click on “Respiratory System” on the left navigation bar.
The Respiratory System:
11. What is the function of the respiratory system?
12. Trace the pathway that air takes going through the pig’s body by listing the
structures in the order air passes through them.
Click “Next: Trachea”  Trachea
13. Complete the table below distinguishing the upper and lower respiratory tract.
Upper Respiratory Tract Structures
Lower Respiratory Tract Structures
14. Describe the structure and function of the trachea.
Click “Next: The lungs”  The Lungs
15. How did they make the lungs more clearly visible?
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16. What type of membrane are the lungs naturally encapsulated by? Is it shown in
the photo?
Click “Next: Lung (removed)”  Lungs Removed
17. What is the term for splitting something into two, as the trachea splits into two
bronchi?
18. In this photo, which important circulatory system blood vessel is visible?
Click “Next: Lung cross section”  Lungs Cross Section
19. Beginning with the trachea and ending with alveoli, explain how the “branching” lung
structures are like a tree.
Click “The diaphragm” on the left navigation bar  The Diaphragm
20. What two regions of the body does the diaphragm separate?
21. How does the diaphragm function to bring air into the lungs?
**End of the Respiratory System section**
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Next, test your knowledge of the circulatory and respiratory systems by completing the
quizzes below:
Circulatory System Quiz
Test your knowledge of blood flow by placing the words in the word bank into the appropriate
space in the flow chart. The flow chart should show the correct sequence of blood from the
body to different parts of the heart and to the lungs.
Right atrium
Left atrium
Lungs
Left ventricle
Right ventricle
CO2/O2 exchange
1.
Body
2.
3.
4.
5.
Pig’s right
Pig’s left
6.
7.
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Respiratory System Quiz
Match the structures on the diagram with their name (in the word bank) and function (A-E):
Lungs
Bronchi
Diaphragm
Trachea
Nares
Functions:
A. Connects upper and lower respiratory
system
B. Distributes air into both lungs
C. Contraction creates negative pressure
D. Air enters the respiratory system
E. Aids gas exchange with its huge surface
area
Structure
Function (A-E)
1)
_______________________
_________
2)
_______________________
_________
3)
_______________________
_________
4)
_______________________
_________
5)
_______________________
_________
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