The Superior Corner of the Right Atrium of the Heart

Multiple Choice

The superior corner of the right atrium of the heart is located at the

A) costal cartilage of the sixth rib, a finger's width lateral to the sternum.
B) costal cartilage of the third rib where it attaches to the sternum.
C) fifth intercostal space along a line extending inferiorly from the midpoint of the clavicle.
D) midpoint of the jugular notch.