CN&AutoAttempt2-Exam I&II

Question 1

Fxn for CN I

Answer 1

Special Senstory (visceral)-Smell

Question 2

Fxn for CN II

Answer 2

Special Sensory (somatic)-Vision

Question 3

2 Fnx for CN III

Answer 3

Somatic Motor & Parasympathetic

Question 4

Trace the Somatic Motor path of CN III

Answer 4

Cell Body of LMN midbrain->Cavernous Sinus->Superior Orbital Fissure->BRANCHES

Question 5

Trace the Parasym path of CN III

Answer 5

LMN midbrain -> cavernous sinus->superior orbital fissure->eye->ciliary & pupil muscles

Question 6

Fxn & Innervation of CN IV

Answer 6

Somatic Motor (Superior Oblique Muscle)

Question 7

Trace CN IV

Answer 7

Tochlear Nucleus midbrain->cavernous sinus->superior orbital fissure->S.O. muscle

Question 8

Fxn & Innervation of CN VI

Answer 8

Somatic Motor (Lateral Rectus muscle)

Question 9

Trace CN VI

Answer 9

Abducens nucleus (pons)->cavernous sinus->superior orbital fissure->L.R.

Question 10

Fxn & Innervation of XI

Answer 10

Branchial Motor (Trapezuius & S.C.M.)

Question 11

Trace CN XI

Answer 11

Accessory Spinal Nucleus (CRAZY NAME, I KNOW) C1-C6-> up through Foramen Magnum-> out theJugular Foramen->Trap&SCM (TRYING TO GET IN THE COOL CN CLUB)

Question 12

Fxn & Innervation of XII

Answer 12

Somatic Motor (All Tongue Muscles EXCEPT PALATO-GLOSSUS mucscle)

Question 13

Trace XII

Answer 13

Hypoglossal Nucleus->Hypoglossal Canal->muscles

Question 14

What are the two fxns of CN V?

Answer 14

Branchial Motor & General Sensory

Question 15

What are the fxns & homes for the 3 divisions of CN V?

Answer 15

V1-General Sensory (The Orbit) V2-General Sensory (PterygoPalatine Fossa for all things Maxillary) V3-General Sensory&&&Branchial Motor (InfraTemporal Fossa for all things Mandibular)

Question 16

Trace the Branchial Motor innervations of CN V

Answer 16

Trigeminal Motor Nucleus (pons)->foramen ovale->InfraTemporal Fossa->BRANCHES

Question 17

What are the muscle innervations of the Branchial Motor CN V?

Answer 17

Muscles of Mastication (M,L Pterygoids Masseter Temporalis) Others: tensor tympani, tensor veli palatini, ANT belly of Digastric

Question 18

Trace V1

Answer 18

Sesory Cell bodies in Trigeminal Ganglion->cranial cavity->cavernous sinus->superior orbital fissure->orbit->BRANCHES

Question 19

Trace V2

Answer 19

Trigeminal ganglion->cranial cavity->F. Rotundum-PterygoPalatine Fossa (ALL THINGS MAXILLARY)->BRANCHES (InfraOrbital Fissure, Canal, Fossa)

Question 20

Trace V3

Answer 20

Trigeminal ganglion->cranial cavity->F.Ovale->InfraTemporal Fossa(ALL THINGS MANDIBULAR)->I.A. Nerve->Mandibular Foramen->Mandibular Canal->Mental Foramen

Question 21

What are the four fxns of CN VII? This is a Big One :)

Answer 21

Branchial Motor, Parasympathetic, General Sensory, Special Sensory

Question 22

Trace CN VII

Answer 22

Exits brain->Internal Acoustic Meatus->Facial Canal in Temporal Bone->BRANCHES(3)->StyloMastoid Foramen->BRANCHES (Separate FlashCard)

Question 23

What are the five BRANCHES of CN VII at the StyloMastoid Foramen?

Answer 23

To Zanzibar By Motor Car

Question 24

What are the three branches of CN VII in the Facial Canal? BIG ONE What nerves do the main two ride on?

Answer 24

1.Greater Petrosal Nerve (ALL THINGS MAXILLARY) so it rides on V2 from the P.P.Fossa 2. Stapedius Muscle Nerve 3.Chorda Tympani (ALL THINGS MANDIBULAR) so it rides on V3 I.T.Fossa

Question 25

(Easy)Trace the Branchial Motor path for CN VII to TZBMC

Answer 25

motor nucleus of VII (pons)->internal acoustic meatus->stylomastoid foramen->BRANCHES (TZBMC)

Question 26

(Easy)Trace the Banchial Motor path for CN VII to Stapedius Muscle

Answer 26

motor nucleus of VII->internal acoustic meatus-> fascial canal-> BRANCHES to Stapedius

Question 27

ARE YOU READY?! Trace the Parasym Path of CN VII to Lacrimal, Mucous, and Palate

Answer 27

Superior Salvatory Nucleus->internal acoustic meatus->fascial canal->greater petrosal nerve + deep petrosal @ pterygoid canal -> pterygopalatine fossa -> ptergopalatine fossa ->BRANCHES 1.Up V2 to V1 to Lacrimal 2. V2 to nose