Internal Jugular Vein

Question 1

Origin

Answer 1

At jugular foramen as sigmoid sinus continuation (right is usually larger than left)

Question 2

Course

Answer 2

Descends inside carotid sheath lateral to ICA, CCA, and vagus nerve

Question 3

Termination

Answer 3

Behind medial end clavicle by joining subclavian vein forming brachiocephalic vein

Question 4

Branches

Answer 4

1. Superior bulb vein
2. Inferior bulb vein
   At upper and lower ends
   Superior bulb is fixed to jugular foramen margins

Question 5

Surface anatomy

Answer 5

Line between sternoclavicular joint and point between mastoid process and mandible angle (same surface marking of CCA, ICA, and carotid sheath)

Question 6

Tributaries

Answer 6

1. Inferior petrosal sinus
2. Lingual vein
3. Pharyngeal veins
4. Superior thyroid vein
5. Common facial vein
6. Middle thyroid vein

Question 7

Superficial relations

Answer 7

1. Styloid apparatus
2. Sternomastoid
3. Parotid Posteromedial surface
4. Posterior belly digastric with small arteries related to it (occipital and posterior auricular)
5. Inferior belly omohyoid
6. Spinal part accessory nerve
7. Anterior jugular vein
8. Deep cervical lymph nodes

Question 8

Deep relations

Answer 8

1. Atlas transverse process
2. Levator scapulae
3. Scalenus anterior
4. Phrenic nerve
5. 1st part subclavian artery
6. Thoracic duct (on left side)

Question 9

Anteromedial relations

Answer 9

Above:
1. ICA
2. Lower 4 cranial nerves
Below:
1. CCA
2. Vagus nerve