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Internal jugular vein

Other Terms: Internal jugular venous tree, Vena jugularis interna, Veine jugulaire interne


The internal jugular vein is the largest of the superficial veins in the body; it collects blood from the brain, superficial parts of the face, and the neck. Part of the vein also collects blood from the retromandibular vein, facial vein, and lingual vein. It is formed by the inferior petrosal sinus and the sigmoid sinus; it begins at the base of the skull in the posterior compartment of the jugular foramen. The vein is somewhat dilated at its origin, this enlargement forming the superior bulb. It passes down the side of the neck, at first beneath and lateral to the internal carotid artery, and on the lateral side of the common carotid artery. It terminates by joining the subclavian vein and forms the brachiocephalic vein. A little above its termination is another somewhat spindle-shaped enlargement, the inferior bulb. The internal jugular veins have a pair of valves about 2 cm (3/4 inch) from their termination, and the left vein is smaller than the right. The right internal jugular at its termination leaves the right common carotid artery to join the subclavian vein, forming a triangular interval between the artery and vein, while the left internal jugular turns forward to join the subclavian vein, and overlaps the left common carotid artery at the root of the neck.


Vena jugularis interna


Veine jugulaire interne


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