What Is the Internal Jugular Vein?

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Internal Jugular Vein: Anatomy, Function, and Significance

The internal jugular vein is located on either side of the neck. This is sometimes referred to as the internal jugular vein. Its main function is to provide a portal for blood to drain away from the brain and face. The internal jugular vein is the largest of all the veins in the neck. In most cases, the right internal jugular vein will be larger than the left.

As the internal jugular vein travels down the neck, it will connect to the larger vein that is located just below the clavicle or collar bone. This clavicle vein is called the subclavian vein (Function of Subclavian Artery). The subclavian vein merges with the internal pubic vein to form the brachiocephalic vein. The brachiocephalic veins from both sides of the body form a large and small vein called the superior vena cava. The superior vena cava drains directly into the right atrium or apex part of the heart.

The size of the neck veins can be used to help diagnose specific health problems. When a person’s jugular veins are swollen or bulging, it is a good sign of heart failure. The internal jugular vein is directly connected to the right side of the heart. When the heart is not pumping effectively, this will increase the pressure in the internal jugular veins. This will cause the internal jugular nerves to swell.

There are other heart conditions that can cause internal jugular veins to become inflamed. A condition called cardiac tamponade is a life-threatening condition that occurs when the heart contracts. This can happen when fluid or blood fills the space between the heart and the external sac. Because the heart is unable to pump effectively due to compression, increased pressure builds up in the internal jugular veins.

Internal Jugular Vein Anatomy
Internal Jugular Vein – an overview

A rare condition called superior vena cava obstruction occurs when a tumor or blood clot is blocking the superior vena cava. This blockage will keep the nerves of the head, neck, and upper body from drying out effectively. This will result in swelling of the upper part of the body and a sore throat.

Because the internal jugular vein is such a large vein, it is often used for intravenous line placement. This procedure can be performed by a qualified doctor at the bedside or in the operating room. A large hollow tube is threaded into the internal jugular vein and advanced to the opening of the superior vena cava. Once in place and secure, this line can be used to administer intravenous fluids, artificial nutrition, and medications.

It is important to remember that rubbing nerves are not protected by bone or cartilage. Due to this, they get injured. If a laxative vein is badly damaged or detached, it will lead to significant blood loss in a very short time. Emergency medical treatment is essential for survival.