Internal jugular vein - Gross anatomy of Head and neck medical animation

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Internal jugular vein

Content source : B.D Chaurasia vol 3
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The internal jugular vein (IJV) is the major venous return from the brain, upper face and neck.

Gross anatomy
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Origin and course

It is formed by the union of inferior petrosal and sigmoid dural venous sinuses in or just distal to the jugular foramen (forming the jugular bulb). It descends in the carotid sheath with the internal carotid artery. The vagus nerve (CN X) lies between the two.

After receiving tributaries from the face and neck (listed below) it continues to descend before descending into the thorax, usually between the heads of the sternocleidomastoid muscle, before uniting with the subclavian vein to form the brachiocephalic vein.

Tributaries
------------------
inferior petrosal sinus
pharyngeal veins
facial vein
lingual vein
superior thyroid vein
middle thyroid vein
A handy mnemonic to recall the internal jugular vein is:
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Medical Schools Let Fun People In

Relations
---------------
surrounded by accompanying lymph nodes
relation to internal carotid artery
C2: posteriorly
C3: posterolaterally
C4: laterally
vagus nerve (CN X) always situated between the ICA and IJV
anteriorly (i.e. is crossed by these structures)
upper third: spinal root of accessory nerve (CN XI)
middle third: lower root of ansa cervicalis
lower third: sternocleidomastoid muscle, tendon of omohyoid muscle
posteriorly (from superior to inferior as the IJV descends in the neck)
lateral mass of C1 (atlas)
middle scalene muscle
anterior scalene muscle
pleura of lung apices

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