INTERNAL JUGULAR VEIN

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                     INTERNAL JUGULAR VEIN 

  • Direct continuation of sigmoid sinus
  • Extent: From jugular foramen -end clavicle along with subclavian ends at brachiocephalic vein

ORGIN:

  • Superior bulb in jugular fossa of temporal bone

TERMINATION:

  • Inferior bulb in supraclavicular fossa







RELATION:

SUPERFICIAL:

  • Sternocleidomastoid
  • Posterior belly of digastric
  • Superior belly of omohyoid

POSTERIOR:

  • Atlas
  • Cervical plexus

MEDIAL:

  • Internal carotid
  • Common carotid
  • Vagus








TRIBUTARIES:

  • Lingual vein
  • Pharyngeal vein 
  • Superior thyroid
  • Middle thyroid
Thoracic duct open into union of left internal and left subclavian -right duct

In middle of neck internal jugular communicate with external jugular 







APPLIED ANTOMY:

  • Deep to supraclavicular fossa internal jugular can be easily accessible for recording venous pressure
  • During cardiac failure :venous pressure increases internal jugular gets inflated

 


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