Regional Anatomy - Triangles of the Neck

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1. Contents of the Muscular triangle

  • Contains: blood vessels, infrahyoid muscles, the pharynx, the thyroid and parathyroid
  • Contains: no vessels, infrahyoid muscles, the pharynx, the thyroid and parathyroid
  • contains: no vessels, Suprahyoid muscles, the larynx, the thyroid and parathyroid
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2. Contents of the submandibular triangle

  • Contains: submandibular gland (salivary) and lymph nodes, facial nerve
  • contains: submandibular gland (salivary) and lymph nodes, facial artery and vein also pass through
  • Contains: submandibular gland (salivary) and lymph nodes, common carotid artery and vein

3. Main content of the submental triangle

  • parotid lymph nodes --> filter lymph draining from floor of the mouth and parts of the tongue
  • Submental lymph nodes --> filter lymph draining from floor of mouth and parts of tongue
  • digastric lymph nodes --> filter lymph draining from floor of mouth and parts of tongue

4. What nerve or nerves are found in this triangle

  • Glossopharyngeal (IX) and Vagus (X) nerve
  • Accessory (XI), Vagus (X) & glossopharyngeal (IX) nerves
  • Accessory Nerve (XI)
  • Vagus neve (X)

5. Borders of the Subclavian triangle

  • Superior- the inferior belly of the omohyoid, inferior-clavicle, base- posterior border of the sternocleidomastoid, floor- formed by 1st rib with digitation of the serratus anterior
  • Superior- Posterior border of the sternocleidomastoid, inferior- 1st rib, Base- inferior belly of the omohyoid, floor- clavicle
  • Superior- posterior border of the sternocleidomastoid, Inferior- inferior belly of the omohyoid, base- clavicle, floor- 1st rib

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