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Pharynx and Larynx
Head n Neck
| Question | Answer |
|---|---|
| Oblique arytenoid and aryepiglottic | Prevent food from entering (the inlet of larynx - Aditus) larynx and trachea during swallowing. |
| Internal branch of the Superior laryngeal (Sensory) and Superior thyroid laryngeal A | Pierce thyroid membrane and supply sensory fibers to the mucous membranes of larynx superior to vocal folds. |
| External Branch of Superior Laryngeal (Motor) | Supplies fibres to cricothyroid muscle; Nerve damage - patient would be unable to tense the vocal cords |
| Recurrent laryngeal N | Supplies Motor fibres to upper esophagus, lower pharynx, and all the laryngeal muscles except cricothyroideus. |
| Cricothyroid | one muscle innervated by the external branch of the superior laryngeal nerve; responsible for stretching (elongating) the vocal ligament is the |
| Posterior cricoarytenoid | only muscle that abducts the vocal folds; is innervated by the inferior laryngeal nerve |
| vagus nerve | motor innv. to the muscles of the pharynx and larynx; supplies motor innervation to the palate muscles, with the exception of tensor veli palatini (innervated by the V3 division of the trigeminal nerve); Damage would cause problems with swallowing |
| glossopharyngeal nerve | supplies sensory, but not motor, innervation to the pharynx |
| superior cervical ganglion | GVE and GVA fibers to the blood vessels & glands of the pharynx |
| glossopharyngeal n | exit the cranium through the medial margin of the jugular foramen; enter the pharynx b/w the superior and middle constrictor muscles; Tympanic branch- parasyp. Neurons along the lesser S .P N to Otic Ganglion; P |
| Carotid Sheath contains: | Vagus N, Superior Ramus of the Ansa Cervicalis, Internal Carotid, Common Carotid, and the Internal Jugular Vein. |
| Horner's syndrome | Injury to sympathetic trunk; ptosis, constricted pupil, lack of sweating on the affected side, flushing on the affected side, and enophthalmos (sunken-in eye) |
| injury to the hypoglossal nerve | would cause the tongue, when protruded, to point to the side of the face with the injured nerve. |
Created by:
togini
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