Vena Cava

Vena Cava is the largest vein in the human body. It is responsible for carrying deoxygenated blood from the body back to the heart. There are two types of vena cava: the superior vena cava and the inferior vena cava.

Anatomy

The superior vena cava is located in the upper part of the body. It collects blood from the head, neck, upper limbs, and the upper part of the chest. It is approximately 7 cm in length and has a diameter of about 24 mm.

The inferior vena cava is located in the lower part of the body. It collects blood from the lower limbs, pelvis, abdomen, and the lower part of the chest. It is approximately 15-20 cm in length and has a diameter of about 30 mm.

Both the superior and inferior vena cava empty into the right atrium of the heart.

Function

The primary function of the vena cava is to return deoxygenated blood from the body back to the heart. This blood is then pumped to the lungs where it is oxygenated and returned to the heart to be pumped out to the rest of the body.

Clinical significance

Conditions that can affect the vena cava include thrombosis, aneurysm, and trauma. These conditions can lead to serious complications such as pulmonary embolism and heart failure.

See also

• Heart
• Vein
• Blood circulation