The ________ is an important ridge of muscle extending horizontally around the right ventricle from theinterventricular septum to the base of the anterior papillary muscle containing part of the conducting system.
A) auricle
B) pectinate muscle
C) trabeculae carneae
D) moderator band
E) conus arteriosus

Question

Quizplus · Accepted Answer

The moderator band is a ridge of muscle tissue that extends horizontally from the interventricular septum to the base of the anterior papillary muscle in the right ventricle. It contains part of the conducting system that helps regulate the heart's rhythm. The auricle, pectinate muscle, trabeculae carneae, and conus arteriosus are all structures within the heart, but they are not directly related to the moderator band.

The ________ Is an Important Ridge of Muscle Extending Horizontally