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. the muscles within the suprahyoid group

  • Digastric, sternocleidomastoid, sternothyroid & sternohyoid
  • Digastic, geniohyoid, stylohyoid & mylohyoid
  • Digastric, Stylohyoid, mylohyoid & omohyoid
  • Digastric, Geniohyoid, sternohyoid & mylohoid

3. Borders of the posterior triangle

  • Anterior- posterior border of the sternocleidomastoid, Posterior- anterior portion of the sternocleidomastoid, inferior- the first third of the clavicle
  • Anterior- Posterior border of the sternocleidomastoid, Posterior- Anterior border of the trapezius muscle, Inferior- middle 3rd of the clavicle
  • Anterior- Anterior border of the sternocleidomastoid, Posterior- posterior border of the sternocleidomastoid, Inferior- middle 3rd of the clavicle

4. Borders of the Muscular triangle

  • Superior- imaginary midline of the neck, Medial- hyoid bone, Superolateral- superior belly of the omohyoid muscle, infer-lateral- inferior portion of the sternocleidomastoid muscle
  • Superior- hyoid bone, Medial- imaginary midline of the neck, Supero-lateral- superior belly of the omohyoid muscle, Infero-lateral- inferior portion of the sternocleidomastoid muscle
  • Superior- superior belly of the omohyoid muscle, medial- imaginary midline of the neck, Supero-lateral- hyoid bone, infer-lateral inferior portion of the sternocleidomastoid muscle

5. Names of the two subdivision of the posterior triangles of the neck

  • olfactory and subclavian triangles
  • Occipital and Subclavian triangles
  • Occipital and submandibular triangles
  • Olfactory and submandibular triangles

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