Regional Anatomy - Triangles of the Neck

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1. What nerve or nerves are found in this triangle

  • Accessory Nerve (XI)
  • Glossopharyngeal (IX) and Vagus (X) nerve
  • Accessory (XI), Vagus (X) & glossopharyngeal (IX) nerves
  • Vagus neve (X)
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2. Contents of the Muscular triangle

  • Contains: no vessels, infrahyoid muscles, the pharynx, the thyroid and parathyroid
  • contains: no vessels, Suprahyoid muscles, the larynx, the thyroid and parathyroid
  • Contains: blood vessels, infrahyoid muscles, the pharynx, the thyroid and parathyroid

3. Borders of the Anterior triangle

  • Superior- Inferior border of the mandible (jawbone), Lateral- medial border of the sternocleidomastoid, medial- imaginary sagittal line down the midlineof body
  • Superior - imaginary sagittal line down midline of body, lateral- medial border of the sternocleidmastoid, medial- inferior border of the mandible
  • Superior- medial border of the sternocleidmastoid, Lateral- imaginary sagittal line down the midline of the body, medial- inferior border of the mandible (jawbone)

4. 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

5. Borders of the occipital triangle

  • Anterior- sternocleidomastoid, Posterior- trapezius, inferior- omohyoideus, floor- splines captious, elevator scapulae and scalene medium and posterior
  • Anterior- omohyoidues, Posterior- sternocleidomastoid, inferior- trapezius, floor- splenius capitis, levator scapulae and scalene medius and posterior
  • Anterior- trapezius, Posterior- omohyoideus, inferior- sternocleidmastoid, floor- splenius capitis, levator scapulae and scalene medius and posterior

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