Re: Anterior Triangle

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: : Anterior Triangle, Thyroid, and Root of Neck - Learning Objectives and Review Questions : : True/False : : 1. The ansa cervicalis is part of a somatic plexus whereas the ansa subclavia is part of an autonomic trunk. True : : 2. The dorsal scapular nerve passes through the interscalene triangle. True- pierces middle scalene to exit. : : 3. The phrenic nerve is anterior to the prevertebral fascia and posterior to the suprascapular artery. False- Posterior to both. It lies within pre-vertebral fascia according to our drawing. : : 4. The dorsal scapular nerve generally pierces the middle scalene and the long thoracic nerve pierces the posterior scalene. False- both pierce middle scalene to enter the posterior triangle. : : 5. The nerve to thyrohyoid travels, in part, with the hypoglossal nerve. True, buts is C1. : : 6. The nerve to genioglossus travels, in part, with the lingual nerve. False? Unless the hypoglossal nerve travels with the lingual nerve for a bit. : : 7. The nerve to mylohyoid passes along the inferior surface of the mylohyoid between it and anterior belly of the digastric muscle.True. : : 8. The lingual nerve passes the medial border of the hyoglossus muscle whereas the lingual artery passes lateral to the hyoglossus muscle. False- the artery lies medial, the nerve lies lateral and more superior. : : 9. The glossopharyngeal nerve and the lingual artery each cross the lateral surface or the hyoglossus. False. Lingual artery lies medial to hyoglossus. : : 10. The internal laryngeal nerve passes through the thyrohyoid membrane with the superior laryngeal artery. True. This is carrying GVA and SVE. : : 11. The internal laryngeal nerve is sensory (SVA GVA) only whereas the external laryngeal nerve is motor (SVE) only. False- internal laryngeal carries SVE not SVA. : : 12. The vertebral artery generally first enters the transverse foramen of C7 whereas the vertebral vein first enters the transverse foramen of C6. False- vertebral veins make a plexus. Vertebral artery enters at C6, not C7. : : 13. Hypertrophy of the scalene muscles may cause weakness in the upper extremity. True- brachial plexus compression. : : 14. The omohyoid fascia is a specialization of prevertebral fascia. False. Strap muscles (omohyoid) lie in deep layer of superficial cervical fascia. : : 15. The ansa cervicalis innervates the anterior, but not the posterior belly of the omohyoid. False- It has a superior and inferior belly to begin with. : : 16. The nerve to mylohyoid innervates the posterior belly of the digastric but not the anterior belly. False- facial nerve innervates the posterior belly. : : 17. The facial artery elaborates the submental artery. True. : : 18. The hypoglossal nerve hosts non-native fibers derived from the brachial plexus. False- cervical plexus. : : 19. The hypoglossal nerve passes immediately superior to the greater horn of the hyoid bone. True. : : 20. The cricothyroideus muscle, when fully contracted, lowers the pitch of the voice. False- raises the pitch of the voice. (as when one gets extremely excited about a chorda tympani finding)

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