Summary of the Motor Supply to the Head & Neck

Question 1

all extraocular muscles, including the levator palpebrae superioris, are supplied by the ___ nerve

except the ___ muscle: ___ nerve

except the ___ muscle: ___ nerve

Answer 1

oculomotor nerve

superior oblique muscle
trochlear nerve

lateral rectus muscle
abducens nerve

Question 2

all muscles of the palate are supplied by the ___ nerve

except the ___ muscle: ___ nerve

Answer 2

vagus nerve

tensor veli palatini mucsle
V3

Question 3

all pharyngeal muscles are supplied by the ___ nerve

except the ___ msucle: ___ nerve

Answer 3

vagus nerve

stylopharyngeus muscle
glossopharyngela nerve

Question 4

all intrinsic & extrinsic muscles of the tongue are supplied by the ___ nerve

except the ___ muscle: ___ nerve

Answer 4

hypoglossal nerve

palatoglossus muscle
vagus nerve

Question 5

all muscles of facial expressoin, including the epicranius (occipitofrontalis), buccinator & platysma, are supplied by the ___ nerve

in addition, this nerve supplies three muscles (3)

Answer 5

facial nerve

stapedius muscle
posterior belly of digastric muscle
stylohyoid muscle

Question 6

all four muscles of mastication are supplied by the ___ nerve

this nerve supplies four muscles (4)

Answer 6

mandibular nerve (V3)

tensor veli palatini
tensor tympani
anteiror belly of digastric
mylohyoid

Question 7

all intrinsic muscles of the larynx are supplied by the ___ nerve

except the ___ muscle: ___ nerve

Answer 7

recurrent laryngeal branch of the vagus nerve

cricothyroid muscle
superior laryngeal branch of the vagus

Question 8

all infrahyoid muscles are supplied by the ___ nerve

except the ___ muscle: ___ that continues w/ the ___ nerve

this also supplies the ___ muscle

Answer 8

ansa cervicalis (C1-3)

thyrohyoid muscle
direct branch of C1 that continues w/ the hypoglossal nerve

geniohyoid muscle

Question 9

the sternocleidomastoid & trapezius are supplied by the ___ nerve

Answer 9

spinal accessory nerve

Question 10

the scalenes are supplied by direct branches of the ___ of the ___ nerves

Answer 10

ventral rami of the cervical spinal nerves

Question 11

(pre/postgang) (symp/parasymp) fibers from the superior cervical ganglion supply three muscles (3)

Answer 11

postganglionic sympathetic

dilator of the pupil
orbitalis
smooth muscle fibers in the levator palpebrae superioris

Question 12

(pre/postgang) (symp/parasymp) fibers supply two muscles (2)

they also supply the glands of the ___ cavity, ___ glands, & ___ glands

Answer 12

constricotr of the pupil muscle
ciliary muscles

glands of the nasal cavity
salivary glands
lacrimal glands