The Anterior Triangle and Root of Neck

Cervical trachea



  • Found in the midline of the lower neck
  • Continues from larynx  into thoracic trachea
  • Extends from lower edge of cricoid cartilage (C6) to thoracic inlet at T1
  • Inclines backwards as it descends


Anterior Posterior


  • Isthmus of thyroid gland occassionaly pyramidal lobe and thyroidea ima if present
  • Inferior thyroid vein
  • Jugular venous arch
  • Sternohyoid and sternothyroid muscles
  • In babies left brachiocephalic vein and pleurae


  • Esophagus
  • Recurrent laryngeal nerve and inferior thyroid artery
  • Lateral
  • Lobes of thyroid gland
  • Carotid sheath and its contents
  • Brachiocephalic trunk  on the right side

Blood supply  

  • Inferior thyroid artery
  • Inferior thyroid vein

Lymphatic drainage  

  • Pre tracheal nodes
  • Paratracheal nodes
  • Inferior deep cervical nodes


- Recurrent laryngeal nerve
Sympathetic- Inferior cervical ganglion