Antrochoanal polyps arise from the maxillary sinuses and are the much less common; ethmoidal polyps arise from the ethmoidal sinuses. Symptoms of polyps include nasal congestion, sinusitis, anosmia (loss of smell), and secondary infection leading to headache.
Relationship of internal jugular vein to the spinal accessory nerve (SAN). Spinal accessory nerve (SAN) posterior to the internal jugular vein. As the nerve approaches the sternocleidomastoid muscle (SCM), it may perforate the cleidomastoid portion of the SCM (80%) or run posterior to it (20%).
Cranial Nerve 5 (Trigeminal N) ï Motor innervation of the ï Muscles of mastication (chewing) ï Tensor tympani muscle(adjusts tension on ear drum to adjust for loud noises) ï Tensor veli palatini muscle(palate elevation) ï Mylohyoid muscle (moves hyoid bone) ï Anterior belly of digastric muscle.