- Anterior jugular veins 1:
- Run vertically close to the midline
- Thyroid ima artery 1:
- Ima is ‘lowest’ in Latin
- Anatomical variant in 3–10% of the population
- More common British Asian populations
- Arises mainly from the brachiocephalic trunk and ascends along the front of the trachea
- Inferior thyroid veins 1
- Other vessels more lateral: internal jugular vein, carotid artery, external jugular vein