Anatomy Quiz - Cardiac Conduction
5 Questions
| Attempts: 8717
(150).jpg "Anatomy Quiz - Cardiac Conduction - Quiz")
Students are ready to proceed to Unit #2 once they have achieved a score of at least an 80% on the Anatomy quiz.
Questions and Answers
- 1.What structure serves as the pacemaker in the heart?
- A.
AV node
- B.
Bundle of His
- C.
SA node
- D.
Purkinje fibers
- 2.The fibers that conduct the impulse to the ventricles are known as the:
- A.
SA node
- B.
AV bundle
- C.
Right bundle branch
- D.
Purkinje fibers
- 3.The SA node is located:
- A.
In the lower left ventricle wall
- B.
In the septum between the atria and ventricles
- C.
In the septum between the left and right ventricles
- D.
In the upper right atrial wall
- 4.At rest, a new impulse is generated by the pacemaker at the rate of about ___ per minute:
- A.
170
- B.
75
- C.
25
- D.
125
- 5.The main function of the cardiac conduction pathway is:
- A.
To ensure coordinated muscle contraction in the chambers and effective pumping of blood
- B.
To increase and decrease the heart rate in response to exercise
- C.
To ensure that the heart muscle in the atria and ventricles all contracts at the same time
- D.
None of the above
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