CN V
supplies arch 1
motor - muscles of mastication, mylohyoid, anterior belly of digastric, tensor veli palatini, and tensor tympani
mandibular branch
CN V
supplies arch 1
somatosensory - mucosa of nasal cavity, maxillary sinus
maxillary branch
CN V
supplies arch 1
somatosensory - anterior 2/3 of tongue, floor of mouth, not taste
mandibular branch
first arch
think "M"
Maxillay and Mandibular nerves
Malleus and incus
sphenoMandibular ligament and anterior ligament of Malleus
Mastication, Mylohoid, anterior belly of digastric, tensor tympani, tensor veli palatini
Maxillary artery
CN VII
supplies arch 2
special sensory - anterior 2/3 of tongue taste
chordae tympani
CN VII
supplies arch 2
parasympathetic preganglionic - pterygopalatine ganglia to mucous glands of nose and palate; also to lacrimal gland
CN VII
supplies arch 2
parasympathetic preganglionic - chordae tympani to submandibular ganglion to submandibular and sublingual salivary glands
CN VII
supplies arch 2
sensory - external meatus and auricle
CN VII
supplies arch 2
motor - muscles of facial expression
second arch
think "S"
overgrows the two arches after -> cervical Sinus
Smooth neck by Seventh week
hyoid bone in neck
Stapes, Styloid, CN 7, Stylohoid ligament
Stylohyoid muscle, facial expression (Smile), Stapedius, posterior belly of digastric
Stapedial artery
CN IX
supplies arch 3
motor - only stylopharyngeus
CN IX
supplies arch 3
parasympathetic preganglionic - otic ganglia to parotid gland (secretory)
CN IX
supplies arch 3
special sense - taste to posterior 1/3 of tongue
CN IX
supplies arch 3
general sensory - oropharyngeal wall, auditory tube, medial side of tympanic membrane, mastoid
CN IX
supplies arch 3
sensory - carotid sinus
third arch
no tricks to remember
greater cornu of hyoid bone, lower part of hyoid bone
stylopharyngeus
CN X
supplies arch 4 and 6
motor - all muscles of pharynx (except stylopharyngeus), larynx, all muscles to palate (except tensor veli palatini)
CN X
supplies arch 4 and 6
secretory to glands in neck region
CN X
supplies arch 4 and 6
sensory - mucous surfaces in neck region, outer surface of eardrum
CN X
supplies arch 4 and 6
preganglionic parasympathetic - to thorax and abdomen