Sternocostal surface
Encyclopedia
The sternocostal surface of the heart (anterior surface of the heart) is directed forward, upward, and to the left.
Its lower part is convex, formed chiefly by the right ventricle
, and traversed near its left margin by the anterior longitudinal sulcus
.
Its upper part is separated from the lower by the coronary sulcus
, and is formed by the atria
; it presents a deep concavity, occupied by the ascending aorta
and the pulmonary artery
.
Its lower part is convex, formed chiefly by the right ventricle
Right ventricle
The right ventricle is one of four chambers in the human heart. It receives deoxygenated blood from the right atrium via the tricuspid valve, and pumps it into the pulmonary artery via the pulmonary valve and pulmonary trunk....
, and traversed near its left margin by the anterior longitudinal sulcus
Anterior longitudinal sulcus
The ventricles of the heart are separated by two grooves, one of which, the anterior longitudinal sulcus , is situated on the sternocostal surface of the heart, close to its left margin. The other groove separating the ventricles is the posterior interventricular sulcus....
.
Its upper part is separated from the lower by the coronary sulcus
Coronary sulcus
The atria of the heart are separated from the ventricles by the coronary sulcus ; this contains the trunks of the nutrient vessels of the heart, and is deficient in front, where it is crossed by the root of the pulmonary artery.-External links:*...
, and is formed by the atria
Atria
Atria may refer to:*Atrium , an anatomical structure of the heart*Atrium , a large open space within a building*Atria or Alpha Trianguli Australis, a star in the constellation Triangulum Australe...
; it presents a deep concavity, occupied by the ascending aorta
Ascending aorta
The ascending aorta is a portion of the aorta commencing at the upper part of the base of the left ventricle, on a level with the lower border of the third costal cartilage behind the left half of the sternum; it passes obliquely upward, forward, and to the right, in the direction of the heart’s...
and the pulmonary artery
Pulmonary artery
The pulmonary arteries carry deoxygenated blood from the heart to the lungs. They are the only arteries that carry deoxygenated blood....
.