Biol& 242 Laboratory
Stavney NSCC Spr 2010
Name
Lab Quiz 3
10 pts. Complete the questions below by filling in the blanks.
1. 1 pt. Which two chambers of the heart connect to the pulmonary circuit? Be specific.
&
3. 1 pts. Explain why the bicuspid/mitral valve doesn't "blow backwards" when the ventricles
contract. What structures deal with this problem?
4. 1 pt. When you hear the "dup" sound (S2) of the "lub-dup" heartbeat through a stethoscope,
what is happening in the heart to create this sound? Be specific.
Anterior view,
whole
Anterior view,
coronal section
6. 3 pts. On the heart pictures above, draw lines and label the following three structures:
1) circumflex artery 2) left coronary artery 3)right pulmonary veins
Lab Quiz 2
Biol& 242 Lab pg. 1
First three letters of last name
0
7. 4 pts. On the EKG tracing above, label the P, Q, R, S, and T waves.
Extra Credit
8. 2 pts. Calculate the P-R interval on the EKG above to the hundredths place (0.01), showing all
your math below for full credit. Include the units of measure in your answer for full credit.
final answer here
Lab Quiz 2
Biol& 242 Lab pg. 2