MICROANATOMY

Detailed explanation-1: -Your superior vena cava, your second biggest vein, brings oxygen-poor blood from your upper body to your heart.

Detailed explanation-2: -The vena cava are the two largest veins that carry blood into the right upper chamber of the heart (the right atrium). The superior vena cava carries blood from the brain and arms into the top of the right atrium.

Detailed explanation-3: -The IVC is a large blood vessel responsible for transporting deoxygenated blood from the lower extremities and abdomen back to the right atrium of the heart. It has the largest diameter of the venous system and is a thin-walled vessel.

Detailed explanation-4: -The right and left brachiocephalic veins, also known as the innominate veins, join to form the superior vena cava posterior to the inferior border of the first right costal cartilage. These veins carry blood from the chest wall, esophagus, lungs, neck, and pericardium.

Detailed explanation-5: -The largest vein in the human body is the vena cava which consists of superior and inferior vena cava. Inferior vena cava lies posterior to the abdominal cavity and runs along the right side of the vertebral column.