Triangles of the neck

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Across
  1. 2. the terminal branch of the medial cord of the brachial plexus
  2. 3. the triangle containing lymph nodes which drain the floor of the mouth and parts of the tongue
  3. 5. cranial nerve found within the carotid sheath
  4. 6. the triangle bounded medially by sternocleidomastoid and posteriorly by the digastric muscle
  5. 9. a space bounded anteriorly by buccopharyngeal fascia and posteriorly by alar fascia
  6. 10. muscle arising between the temporal bone, sternum and clavicle
  7. 11. venous vessel found within the carotid sheath
  8. 12. the triangle bounded anteriorly and posteriorly by the digastric muscle
Down
  1. 1. the brachial plexus arises between the anterior and middle muscle belly of
  2. 3. geniohyoid muscle can be categorised into this muscle group
  3. 4. the triangle containing the thyroid, parathyroid glands and infrahoyids
  4. 7. vein which terminates by draining into the subclavian vein
  5. 8. nerve with roots C3, 4, 5