Match each part of the conduction system of the heart to the description of its location or function.
-structure that is located below the atrial epicardium at its junction with the superior vena cava
A)Interatrial bundles
B)Atrioventricular node
C)Sinoatrial node
D)Purkinje fibers
E)Bundles of His
F)Internodal bundles

Question

Quizplus · Accepted Answer

The sinoatrial node is located below the atrial epicardium at its junction with the superior vena cava and is responsible for initiating the electrical impulses that regulate heart rate.

Answer: B 
 The atrioventricular node is located in the lower part of the atrial septum and receives the electrical impulses from the sinoatrial node before transmitting them to the ventricles.

Answer: E 
 The bundles of His are specialized fibers that travel down the interventricular septum and divide into the left and right bundle branches, which conduct the electrical impulses to the purkinje fibers.

Answer: F 
 The internodal bundles are specialized fibers that conduct the electrical impulses through the atrial muscle and help coordinate the contraction of the atria.

Answer: A 
 The interatrial bundles are specialized fibers that connect the sinoatrial node to the atrioventricular node and help coordinate the transmission of electrical impulses between the two nodes.

Answer: D 
 The Purkinje fibers are specialized fibers that distribute the electrical impulses throughout the ventricular muscles, causing ventricular contraction.

Match Each Part of the Conduction System of the Heart