Internal jugular vein

Internal Jugular Vein

The Internal Jugular Vein is a paired jugular vein that collects blood from the brain, the superficial parts of the face, and the neck. This vein runs in the carotid sheath with the common carotid artery and vagus nerve.

Anatomy

The Internal Jugular Vein is formed by the union of the Inferior Petrosal Sinus and the Sigmoid Sinus. It begins in the posterior compartment of the jugular foramen, where it is somewhat dilated - a part known as the superior bulb. It also has a common trunk into which the Facial Vein, Lingual Vein, and Pharyngeal Veins flow.

Function

The Internal Jugular Vein provides a pathway for blood returning from the head and neck to reach the heart. It carries deoxygenated blood and is part of the venous system.

Clinical Significance

The Internal Jugular Vein is used in medicine as a landmark for other structures in the neck, such as the Carotid Artery. It can also be used as a site for central venous access in certain medical procedures.

See Also

• External Jugular Vein
• Jugular Venous Pressure
• Carotid Artery

References

Internal jugular vein Resources
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