ANATOMY

Detailed explanation-1: -The right atrium receives deoxygenated blood from the superior vena cava (SVC), the inferior vena cava (IVC), the coronary sinus (covered by the Thebesian valve), and the Thebesian veins.

Detailed explanation-2: -The right ventricle receives deoxygenated blood from the right atrium, then pumps the blood along to the lungs to get oxygen.

Detailed explanation-3: -The right atrium receives deoxygenated blood from systemic veins; the left atrium receives oxygenated blood from the pulmonary veins.

Detailed explanation-4: -Your right and left innominate (or brachiocephalic) veins merge to form your superior vena cava. Your superior vena cava is next to the right side of your sternum and goes into your right atrium, where all the oxygen-poor blood goes.

Detailed explanation-5: -The superior vena cava is a large, short vein that carries deoxygenated blood from the upper half of the body to the right atrium.