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%).
Any of the paired nerves which leave the spinal cord a craniate vertebrate, supply muscles of the trunk and limbs and connect with the nerves of the sympathetic nervous system Sciatic Nerve Nerve that arises from the sacral plexus and serves the dorsal thigh muscles and all the muscles of the leg and foot Just superior to the gastrocnemius muscle of the cat, it divides into its two major branches, which serves the leg