Which letter in the figure identifies the cardiac cells through which there is a 100-ms delay?

A) A
B) B
C) C
D) D

Question

Which letter in the figure identifies the cardiac cells through which there is a 100-ms delay?

A) A 
B) B 
C) C 
D) D

Quizplus · Accepted Answer

As the electrical impulse travels through the atrioventricular node,there is a 100-ms delay in the conduction.This allows the atria to become fully depolarized and contract before ventricular excitation begins.This allows the atrial contraction and emptying to contribute optimally to ventricular filling.

Which Letter in the Figure Identifies the Cardiac Cells Through