Cranial Nerves

Front 1

What are the three branches of the trigeminal nerve

Back 1

V1: Opthalmic Division; V2: Maxillary Division; V3: Mandibular Division

Front 2

Which branches of the trigeminal nerve are sensory and which are motor

Back 2

V1 and V2 are purely sensory; V3 is motor and sensory

Front 3

Where does the opthalmic division (V1) pass through to branch into its three divisions? What are these three division

Back 3

The supraorbital fissure; divides into the (1) nasociliary, (2) frontal and (3) lacrimal nerves

Front 4

What are the five branches of the nasociliary divisions? Pneumonic?

Back 4

"Please leave all packages inside"; P: Parasympathetic Sensory Root; L: Long ciliary; A: Anterior Ethmoidal; P: Posterior Ethmoidal; I: Infratrochlear

Front 5

What are the two divisions of the frontal nerve?

Back 5

The supraorbital and supra-trochlear nerves

Front 6

What are the divisions of the lacrimal nerve?

Back 6

There are no divisions

Front 7

Describe the function of the parasympathetic sensory root. Trace back

Back 7

Passes through the ciliary ganglion; sensory innervation of the eyeball; --> Nasociliary --> Supraorbital fissure --> V1

Front 8

Describe the function of the long ciliary nerve. Trace back

Back 8

Produces sympathetic fibers to dilator pupillae; --> Nasociliary --> Supraorbital fissure --> V1

Front 9

Describe the function of the anterior ethmoidal nerve. Trace back

Back 9

Sensation for anterior cranial fossa, nasal cavity, tip of the nose; t --> Nasociliary --> Supraorbital fissure --> V1

Front 10

Describe the function of the posterior ethmoidal nerve. Trace back

Back 10

Sensation for posterior ethmoidal air cells and sphenoidal sinus; --> Nasociliary --> Supraorbital fissure --> V1

Front 11

Describe the function of the infratrochlear nerve. Trace back.

Back 11

Superomedial corner of the orbit, lacrimal sac, upper half of nose; --> Nasociliary --> Supraorbital fissure --> V1

Front 12

Describe the function of the supra-orbital nerve. Trace Back

Back 12

Sensation to conjunctiva, upper eyelid, forehead and scalp;--> frontal nerve --> Supraorbital fissure --> V1

Front 13

Describe the function of the supra-trochlear nerve. Trace back

Back 13

Sensation to conjuctiva, upper eyelid, lower medial forehead.--> frontal nerve --> Supraorbital fissure --> V1

Front 14

Describe the function of the lacrimal nerve. Trace back.

Back 14

Sensation to lacrimal gland, conjunctiva, and lateral part of the upper eyelid. -->Supraorbital fissure-->V1

Front 15

What is the name of the structure to which the maxillary division (V2) passes through?

Back 15

The foramen rotundum

Front 16

What are the four branches of the maxillary division as it passes through the foramen rotundum

Back 16

(1) the ganglionic branches --> Pterygopalatine ganglion; (2) the zygomatic nerve, (3) superior alveolar nerve; (4) infra-orbital nerve

Front 17

What are the two branches of the zygomatic nerve?

Back 17

Zygomaticotemporal; zygomaticofacial

Front 18

What are the three branches of the infra-orbital nerve?

Back 18

(1) Nasal branches; (2) Palpebral branches; (3) Superior labial branches

Front 19

What is the function of the zygomaticotemporal nerve? Trace back.

Back 19

Supplies sensation to the temple; -->Zygomatic--> Foramen rotundum--> V2

Front 20

What is the function of the zygomaticofacial nerve? Trace back.

Back 20

The zygomaticofacial nerve supplies the anterolateral surface of the cheeks with sensation; Zygomaticofacial-->Zygomatic-->Foramen rotundum-->V2

Front 21

What is the function of the superior alveolar nerve? Trace back.

Back 21

Sensation to superior dental plexus; upper teeth and adjacent gingivae; --> Foramen rotundum-->V2

Front 22

What is the function of the nasal branches of the infra-orbital nerve? Trace back

Back 22

Sensation to external nose; Nasal branches-->Infra-orbital nerve-->Foramen rotundum-->V2

Front 23

What is the function of the palpebral branches of the infra-orbital nerve? Trace back

Back 23

Sensation to the lower eyelid; Palpebral branches-->Infra-orbital nerve-->Foramen rotundum-->V2

Front 24

What is the function of the superior labial branches of the infra-orbital nerve? Trace back

Back 24

Sensation to the upper lip and cheek; superior labial branches-->infra-orbital nerve-->foramen rotundum-->V2

Front 25

What are the two structures that form the Pterygopalatine ganglion? What are the nerves that innervate this ganglion?

Back 25

(1) Ganglionic branches of the Maxillary (V2) Nerve- CNV; (2) Nerve of the Pterygoid Canal- T1 and CNVII (facial nerve)

Front 26

What two nerves combine in the pterygoid canal to form the nerve of the pterygoid canal? What forms these nerves?

Back 26

(1) Greater Petrosal Nerve- pre-ganglionic parasympathetic fibers of the facial nerve (VII); (2) Deep Petrosal Nerve- post-ganglionic sympathetic fibers from T1 (T1-->Superior Cervical Ganglion-->Internal Carotid Nerve-->Deep Petrosal Nerve)

Front 27

What are the four nerves formed from the pterygopalatine ganglion?

Back 27

(1) Orbital branches; (2) Greater and lesser palatine nerve; (3) nasal nerve; (4) Pharyngeal nerve

Front 28

What nerves originate from the greater and lesser palatine nerves and nasal nerves (these are two divisions of the pterygopalatine ganglion)?

Back 28

Greater and lesser palatine--> Posterior inferior nasal nerve; Nasal nerve--> Nasopalatine nerve

Front 29

What is the function of the orbital branches of the pterygopalatine ganglion? Trace back.

Back 29

Sensory innervation of the orbital wall, sphenoidal and ethmoidal sinuses. Orbital branches-->Pterygopalatine ganglion--> Ganglionic branches of the maxillary nerve + Nerve of the Pterygoid Canal (T1 and CN7)

Front 30

What is the function of the greater and lesser palatine nerves? Trace back.

Back 30

Sensation to the mucosa and glands of the hard palate. Greater and lesser palatine nerves-->Pterygopalatine ganglion--> Ganglionic branches of V2 and Nerve of Pterygoid Canal (T1 and CN7)

Front 31

What is the function of the posterior inferior nasal nerve? Trace back

Back 31

Supplies sensation to the lateral nasal wall; Posterior inferior nasal nerve-->Greater and lesser palatine nerves-->Pterygopalatine ganglion--> ganglionic branches of V2 and nerve of the pterygoid canal (T1 and CN7)

Front 32

What is the function of the nasal nerve? Trace back

Back 32

Sensation to the lateral wall of the nasal cavity and nasal septum. Nasal nerve-->Pterygopalatine ganglion-->Ganglionic branches of V2 and nerve to the pterygoid canal (T1 and CN7)

Front 33

What is the function of the nasopalatine nerve? Trace back

Back 33

Sensation to the nasal septum, anterior hard palate; Nasopalatine nerve-->Nasal nerve-->Pterygopalatine ganglion--> Nerve to pterygoid canal (T1 and CN7) and ganglionic branches of V2

Front 34

What is the function of the pharyngeal nerve?

Back 34

Sensation to the mucosa and glands of the nasopharynx. Pharyngeal nerve-->Pterygopalatine ganglion--> nerve to the pterygoid canal (T1 and CN7) and ganglionic branches of V2

Front 35

Trace back the Great Petrosal Nerve to its origin

Back 35

Great Petrosal Nerve-->Pre-ganglionic PARASYMPATHETIC FIBERS of the facial nerve (VII)

Front 36

Trace back the Deep Petrosal Nerve to its origin

Back 36

Deep Petrosal Nerve-->Post-ganglionic SYMPATHETIC fibers from T1-->Internal carotid nerve-->Superior Cervical ganglion-->T1 Spinal nerve