THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The right marginal branch of right coronary artery (or right marginal artery) is the largest marginal branch of the right coronary artery. It follows the acute margin of the heart. It supplies blood to both surfaces of the right ventricle.

Detailed explanation-2: -The pulmonary artery carries oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream. The pulmonary veins bring oxygen-rich blood to the left atrium. The aorta carries oxygen-rich blood to the body from the left ventricle.

Detailed explanation-3: -The left marginal artery of the heart is a branch of the circumflex artery. It originates as the latter passes around the left border of the heart in the interventricular groove. The left marginal artery passes obliquely down the left border towards the apex of the heart. Its fine branches supply the left ventricle.