Anatomy Bones and Muscles · MU Pleven

209. Regio colli lateralis.

Covers the boundaries of the lateral cervical region, bounded by the sternocleidomastoid, trapezius and clavicle, and its division by the omohyoid muscle into the omoclavicular and omotrapezoid triangles. For each triangle it lists the boundaries and the contents, including the subclavian vessels, brachial plexus, phrenic and accessory nerves, the venous angle with the thoracic and right lymphatic ducts, and the nervous point (punctum nervosum).

Inside: 2 sections · 4 labelled pictures · 14 flashcards · 1 min

Topic 208 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 2 sections, about 196 words (1 min of reading), with 14 flashcards.

In this note

  1. LATERAL CERVICAL Region.
  2. Boundaries

Boundaries

  • anterior – posterior border of sternocleidomastoid muscle
  • posterior – anterior border of trapezius
  • inferior – clavicle
  • Subdivided by the omohyoid m. into:
  1. 1. Omoclavicular triangle
  2. 2. Omotrapezoid triangle

Omoclavicular triangle:

Boundaries

  1. 1 Cranially: omohyoid – inferior belly
  2. 2 Caudally: clavicle
  3. 3 Ventrally: sternocleidomastoid – posterior margin

Content

  1. 1 Subclavian artery and vein
  2. 2 Brachial plexus
  3. 3 Phrenic nerve
  4. 4 Supraclavicular nerves
  5. 5 Ascending cervical artery and anterior vertebral vein
  6. 6 Transverse cervical artery and veins
  7. 7 Suprascapular artery
  8. 8 External jugular vein
  9. 9 Venous angle
  10. 9.1 Opening of the thoracic duct on the left side
  11. 9.2 Opening of the right lymphatic duct on the right side
  12. 10 Supraclavicular lymph nodes

Omotrapezoid triangle

Boundaries

  1. 1 Caudally: omohyoid – inferior belly
  2. 2 Ventrally: sternocleidomastoid – posterior margin
  3. 3 Dorsally: trapezius – anterior margin

Content

  1. 4 Nervous point (punctum nervosum) – lesser occipital nerve, great auricular nerve, transverse cervical nerve, supraclavicular nerves
  2. 5 Accessory nerve
  3. 6 Phrenic nerve
  4. 7 Supraclavicular part of the brachial plexus
  5. 8 External jugular vein and its tributaries – transverse cervical and suprascapular veins
  6. 9 Transverse cervical artery and suprascapular artery
  7. 10 Deep cervical artery and vein
  8. 11 Ascending cervical artery and anterior vertebral vein

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