Question 1
- A moderate increase in extracellular potassium will
Increase heart rate due to a more negative EK
Decrease heart rate due to a more negative EK
Increase heart rate due to a less negative EK
Decrease heart rate due to a less negative EK
Question 2
- Apply Atropin will directly
Decrease parasympathetic innervation and increase heart rate
Increase parasympathetic innervation and decrease heart rate
Decrease sympathetic innervation and increase heart rate
Increase sympathetic innervation and decrease heart rate
Frog ECG is recorded using
An electrical stimulator
Three wires including the one that is connected to the hook
A force transducer
Three wires and a force transducer
Question 4
- How would you differentiate atrial contractions fromventricular contractions?
A.
Observe the heart beating and tap the table to label it
B.
From the size of the contractions
C.
Correlate it with the electrical trace, if the electrical traceis typical.
D.
Both A and C
Question 5
- In this week's experiment, _________signal(s) will be recordedto study the frog cardiac functions.
mechanical (contractile)
electrical (ECG)
both mechanical and electrical
blood flow
Question 6
- In this week's experiment, the heart is hooked at the________
either atrium or ventricle
ventricle
atrium
sympathetic/increase
parasympathetic/decrease
Sympathetic/decrease
parasympathetic/increase
Question 8
- The frog heart can be slowed or stopped by over stimulation ofthe vagus nerve. When apply ACh to the heart, if the frog heartstop beating, you should
Wash the heart with warm Ringers
Apply a few drops of Isuprel
Massage the heart
All of the above
Observe the trace and do nothing
Question 9
- The pacemaker in the frog heart is the __________ and thepacemaker in the mammalian heart is the ________
AV, SA node
SV, SA node
SA, SV node
SA, SA node
Question 10
- Which of the following statements is TRUE regarding the frogheart
There is no autorhythmic cells found in the frog ventricle.
Oxygenated and deoxygenated blood are mixed completely insidethe frog ventricle
There are two atria and two ventricles.
Deoxygenated blood flows to the frog lungs and skin.
Question 1
- A moderate increase in extracellular potassium will
Increase heart rate due to a more negative EK | ||
Decrease heart rate due to a more negative EK | ||
Increase heart rate due to a less negative EK | ||
Decrease heart rate due to a less negative EK |
Question 2
- Apply Atropin will directly
Decrease parasympathetic innervation and increase heart rate | ||
Increase parasympathetic innervation and decrease heart rate | ||
Decrease sympathetic innervation and increase heart rate | ||
Increase sympathetic innervation and decrease heart rate |
Frog ECG is recorded using
An electrical stimulator | ||
Three wires including the one that is connected to the hook | ||
A force transducer | ||
Three wires and a force transducer |
Question 4
- How would you differentiate atrial contractions fromventricular contractions?
A. | Observe the heart beating and tap the table to label it | |
B. | From the size of the contractions | |
C. | Correlate it with the electrical trace, if the electrical traceis typical. | |
D. | Both A and C |
Question 5
- In this week's experiment, _________signal(s) will be recordedto study the frog cardiac functions.
mechanical (contractile) | ||
electrical (ECG) | ||
both mechanical and electrical | ||
blood flow |
Question 6
- In this week's experiment, the heart is hooked at the________
either atrium or ventricle | ||
ventricle | ||
atrium |
sympathetic/increase | ||
parasympathetic/decrease | ||
Sympathetic/decrease | ||
parasympathetic/increase |
Question 8
- The frog heart can be slowed or stopped by over stimulation ofthe vagus nerve. When apply ACh to the heart, if the frog heartstop beating, you should
Wash the heart with warm Ringers | ||
Apply a few drops of Isuprel | ||
Massage the heart | ||
All of the above | ||
Observe the trace and do nothing |
Question 9
- The pacemaker in the frog heart is the __________ and thepacemaker in the mammalian heart is the ________
AV, SA node | ||
SV, SA node | ||
SA, SV node | ||
SA, SA node |
Question 10
- Which of the following statements is TRUE regarding the frogheart
There is no autorhythmic cells found in the frog ventricle. | ||
Oxygenated and deoxygenated blood are mixed completely insidethe frog ventricle | ||
There are two atria and two ventricles. | ||
Deoxygenated blood flows to the frog lungs and skin. |