Podcast
Questions and Answers
What is the role of the SA node in the heart?
What is the role of the SA node in the heart?
- It connects the AV node to the ventricles
- It causes ventricular contraction by generating an electrical impulse
- It causes atrial contraction by generating an electrical impulse (correct)
- It delays the electrical impulse from reaching the ventricles
How is atrial depolarization initiated?
How is atrial depolarization initiated?
- By the bundle of His
- By the SA node (correct)
- By the Purkinje fibers
- By the AV node
What is the purpose of the AV nodal delay?
What is the purpose of the AV nodal delay?
- To speed up the conduction of electrical impulse to the ventricles
- To prevent the spread of electrical impulse to the ventricles
- To ensure efficient blood flow by allowing the atria to complete their contraction before the ventricles contract (correct)
- To generate an electrical impulse for ventricular depolarization
What is the function of the bundle of His?
What is the function of the bundle of His?
What are Purkinje fibers responsible for?
What are Purkinje fibers responsible for?
What is the total time taken for an electrical impulse to travel from the SA node to the ventricles called?
What is the total time taken for an electrical impulse to travel from the SA node to the ventricles called?
What is the role of the SA node in the heart?
What is the role of the SA node in the heart?
Which part of the heart receives the impulse from the SA node and delays it before sending it to the ventricles?
Which part of the heart receives the impulse from the SA node and delays it before sending it to the ventricles?
Which part of the heart helps in the synchronous contraction of the atria?
Which part of the heart helps in the synchronous contraction of the atria?
Where are the internodal atrial pathways found?
Where are the internodal atrial pathways found?
Which part of the heart is responsible for coordinated contraction and relaxation of the cardiac muscles?
Which part of the heart is responsible for coordinated contraction and relaxation of the cardiac muscles?
Which part of the heart generates the initial electrical impulse that triggers the heartbeat?
Which part of the heart generates the initial electrical impulse that triggers the heartbeat?
