Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Right margin
Introduction
Overview
Overview
The right margin of the heart (right border of heart) is long, and is formed by the right atrium above and the right ventricle below.
- The atrial portion is rounded and almost vertical; it is situated behind the third, fourth, and fifth right costal cartilages about 1.25 cm. from the margin of the sternum.
- The ventricular portion, thin and sharp, is named the acute margin; it is nearly horizontal, and extends from the sternal end of the sixth right coastal cartilage to the apex of the heart.
Editor-In-Chief: Template:Infobox Anatomy Template:Search infobox C. Michael Gibson, M.S., M.D. [1]