Fascia of Neck:four layers Nuchal ligament Skin Posterior Retropharyngeal space Vertebral arch Trapezius Alar fascia Middle scalene Lymph node Anterior scalene. Carotid Longus sheath colli Vagus nerve Esophagus Internal Omohyoid- jugular vein Platysma Common carotid artery Sternocleido- mastoid(SCM) Sternothyroid Thyroid gland Anterior Sternohyoid Trachea Pretracheal layer C Superior view of transverse section (at level C7 vertebra)Fascia of Neck: four layers