Cervical Triangle

Cervical Triangle

1. Post. Triangle

   • BORDERS:
     • Ant
       • SCM
         • Accessory N: post border of SCM --> over lavertor scapula --> ant border of trapizus
     • Base:
       • mid 1/3 of clavicle
     • Apex:
       • where SCM and Trapizus m. meet superiorly
       • Nuchal line
     • Roof:
       • Investing Layer betw SCM and Trapizus m.
       • Investing layer*
     • Floor:
       • It covers: Paravertebral M:-Splenius Capitus-levator scaplea-scalenus antscalenus Medius -scalenus post.
       • Prevertebral Fascia
     • Post
       • Trapizus
   • DEVIDED BY: Inf Belly of Omohyoid
     • Above
       • Occipital Triangle
     • Below:
       • Suprascapular Triangle
   • Content:
     • Nerve:
       • Cutaneous branch of cervical plexus
         • Pierces deep "prevertebra"l fascia
     • Vessels:
       • Transcervical
       • Supracervical
     • Lymph Nodes
       • At Apex: occipital L.N
       • Above clavicale: Supraclavicular
       • around axillary sheath: axillary L.N

2. Ant. Triangle

   • BORDER:
     • Sup:
       • Inf ide of Mndible
     • Post:
       • Lat side of SCM
     • Roof:
       • Investing layer
         • Above it
           • Platyma Muscle
     • Floor:
       • Ant
         • Prevertebral Fascia
       • Post-Lat
         • Carotid sheath
     • Ant:
       • imaginary line from mental protubrance to hyoid bone
   • Divided By
     • Post Belly Didastric M.
       • Carotid Triangle
         • Floor
           • Muscular wall of pharynx
           • thyroid cartilagle
           • Thyroid mmb
         • Content
           • Common Carotid a.
           • Internal jugular v
           • Sup thyroid a.
           • lingual a.
       • Digastric Triangle
         • Floor
           • Mylohyoid
         • Content
           • Submandibular gland
           • Facial a.
           • Facial v.
     • Sup Belly of Omohyoid
       • Muscular Triangle
         • Content
           • Sternothyroid m.
           • Sternohyoid m.
           • Thyrohyoid m.