Anatomy (Topographic) · MU Sofia

243. Lateral cervical region.

Covers the lateral cervical region, starting with its boundaries formed 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 structures inside, including the subclavian vessels, brachial plexus, phrenic and accessory nerves, the venous angle and the nervous point. Four pictures accompany the text.

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

Topic 14 of 40 in the MU Sofia syllabus for Anatomy (Topographic) (Medicine, Year 2). The free AceMed note covers it in 2 sections, about 195 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. Omoclavicular triangle
  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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