Cranial nerve and facial expression

Question 1

layers of the scalp

Answer 1

skin, connective tissue, aponeurosis, loose connective tissue, pericranium

Question 2

contents of the temporal fossa

Answer 2

upper portion on temporalis and superficial artery and vein

Question 3

motions of the TMJ joint

Answer 3

depression, elevation
protrusion and retrusion
side to side excursion

Question 4

contents of infratemporal fossa

Answer 4

lower portion of temporalis
lateral and medial pterygoid
maxillary artery
pterygoid venous plexus
mandibular division of CN V and chorda tympani
otic ganglion

Question 5

contents of the pterygopalatine fossa

Answer 5

pterygopalatine ganglion
pterygopalatine part of maxillary a.

Question 6

terminal branches of CN 7

Answer 6

temporal, zygomatic, buccal, mandibular, cervical, posterior auricular

Question 7

functions of CN 7

Answer 7

somatic motor, visceral motor (parasympathetic), somatic sensation to the external ear, visceral sensation- taste of 2/3 anterior tongue

Question 8

injury of CN 7 before crossing the acoustic meatus

Answer 8

peripheral motor facial paralysis, hearing loss and dizziness

Question 9

injury of CN 7 after the geniculate ganglion but before tympanic cavity

Answer 9

peripheral motor paralysis, disturbances in taste, lacrimation and salivation

Question 10

injury of CN 7 before crossing the tympanic cavity

Answer 10

motor paralysis, disturbances in salivation and taste

Question 11

injury of CN 7 in or after crossing the tympanic membrane

Answer 11

peripheral motor paralysis, disturbances of taste and salivation

Question 12

injury of CN 7 after leaving the stylomastoid foramen

Answer 12

facial paralysis

Question 13

divisions of trigeminal nerve

Answer 13

V1: opthalmic nerve- somatic/ chemical sensation (gas)
V2: Maxillary nerve- somatic/ chemical sensation (smell)
V3: Mandibular nerve- somatic motor and sensation, sensory- mental nerve (taste) motor- muscles for mastication, hearing, swallowing

Question 14

terminal branches of the trigeminal nerve divisions

Answer 14

V1: opthalmic n. terminal branch- supraorbital n.
V2: maxillary n. terminal branch- infraorbital
V3: mandibular n. terminal branch- mental n.

Question 15

what 3 cranial nerves is the trigeminal nerve a shuttle for

Answer 15

CN 3: ciliary ganglion
CN 7: facial n.- pterygopalatine ganglion (zygomatic n. of V2 and lacrimal of V1) and submandibular ganglion (lingual n. of V3)
CN 9: otic ganglion (auriculotemporal n. of V3)

Question 16

branches from the external carotid a.
(lary’s friend always always makes spaghetti)

Answer 16

lingual, facial, ascending pharyngeal, ascending palatine, maxillary, superficial temporal

Question 17

branches from the maxillary a.

Answer 17

middle meningeal, inferior alveolar, greater and lesser palatine, sphenopalatine, deep temporal

Question 18

what is the deep facial muscleq

Answer 18

buccinator

Question 19

functions of the buccinator

Answer 19

holds food in mouth and forcefully blow air out

Question 20

orbicularis oculi functions

Answer 20

closes eyelids
orbital part: wink tightly
palpebral part: blink reflex

Question 21

zygomaticus major funtion

Answer 21

smile expression

Question 22

mastication muscles

Answer 22

medial pterygoid
lateral pterygoid
temporalis
masseter

Question 23

medial pterygoid innervation and function and attachment

Answer 23

attachment: inside of mandibular angle
innervation: CN 5
function: elevate and protract mandible

Question 24

lateral pterygoid innervation, function, and attachment

Answer 24

attachement: mandibular condyle
innervation: CN 5
function: initiate mandibular motion, protract mandible

Question 25

temporalis innervation, function, and attachment

Answer 25

attachment: coronoid process
innervation: CN 5- deep temporal branch
function: elevate and retract mandible

Question 26

masseter innervation, function, and attachment

Answer 26

attachment: outside of mandibular angle
innervation: CN 5
function: elevate and protract mandible

Question 27

damage above lower motor nuclei in ONE hemisphere, paralysis of contralateral face- scalp spared

Answer 27

upper motor neuron injury

Question 28

damage in or below lower motor motor nuclei, paralysis of both ipsilateral face and scalp

Answer 28

lower motor neuron injury