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Lab Quiz
Cardiovascular Physiology Lab Quiz


 This activity contains 20 questions.

Question 1
1 Refer to Activity 2: Investigating the Refractory Period of Cardiac Muscle. What are extra systoles?
 
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Question 2
2 Refer to Activity 2: Investigating the Refractory Period of Cardiac Muscle. During which portion of the cardiac cycle was it possible to induce an extra systole?
 
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Question 3
3 Was it possible to tetanize the heart by administering multiple electrical shocks to the muscle at the rate of 20 stimuli/sec.?
 
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Question 4
4
Open Hint for Question 4 in a new window		 Why is it important that the heart muscle cannot be tetanized?
 
End of Question 4


Question 5
5 Refer to Activity 3: Examining the Effect of Vagus Nerve Stimulation. What is the initial effect of vagal stimulation on the heart rate?
 
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Question 6
6 Refer to Activity 4: Assessing the Effect of Temperature. What change occurred with the cold 5°C Ringer's solution?
 
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Question 7
7 What change occurred with the warm 32°C Ringer's solution?
 
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Question 8
8 What can be said about the relationship between heart rate and temperature? Choose all that apply:
 
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Question 9
9 Refer to Activity 5: Assessing the Effect of Pilocarpine. What happened when the heart was bathed in the pilocarpine solution?
 
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Question 10
10 Refer to Activity 6: Assessing the Effect of Atropine. What was the effect of atropine on the heart?
 
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Question 11
11 Atropine is ____________ to pilocarpine, whereas atropine and pilocarpine are both ____________ in their effects on heart activity.
 
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Question 12
12 Refer to Activity 7: Assessing the Effect of Epinephrine. What was the effect of epinephrine on heart rate?
 
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Question 13
13 What do the effects of epinephrine mimic?
 
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Question 14
14 Refer to Activity 8: Assessing the Effects of Digitalis. What is the effect of digitalis on the heart?
 
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Question 15
15 Refer to Activity 9: Assessing the Effect of Various Ions. How does calcium affect the heart rate?
 
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Question 16
16 How does sodium affect the heart rate?
 
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Question 17
17 How does potassium affect the heart rate?
 
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Question 18
18 Which of the ions did NOT produce arrythmia?
 
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Question 19
19 What are ectopic pacemakers?
 
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Question 20
20 The spontaneous depolarization of the heart muscle in the absence of external stimulation is ___________, whereas the spontaneous depolarization-repolarization events that occur in a regular and continuous manner in cardiac muscle is called ___________.
 
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