Calorie balance refers to the relationship between the calories you consume from all foods and beverages and the calories you expend in basic body functions and through physical activity. When you are in calorie balance, the amount of calories you take in equals the amount of calories you burn and you maintain your body weight.
The inferior vena cava empties into the right atrium of the heart. The right atrium is located on the lower right back side of the heart. The inferior vena cava runs posterior, or behind, the abdominal cavity. This vein also runs alongside the right vertebral column of the spine. The inferior vena cava is the result of two major leg veins coming together.
Anatomy. The superior vena cava (SVC, also known as the cava or cva) is a short, but large diameter vein located in the anterior right superior mediastinum.