Z10 - Maxillary Nerve (Cn V2) And Artery

Front 1

Is the Maxillary division of CN V (V2) sensory, motor, or both

afferent and efferent?

Back 1

sensory (NO MOTOR!!!)

afferent - general sensory (mainly)
efferent - autonomics for lacrimal gland mucous mem of orbit, nose, palate, and pharynx and bv of head

Front 2

the function of this nerve is to provide sensory innervation to the face, upper teeth & gingiva, paranasal sinuses, nasal cavity, palate, nasopharynx, and meninges

Back 2

Maxillary branch of trigeminal nerve (V2)

Front 3

what branches of CN V innervate to tip of the nose and the lower lip?

Back 3

tip of nose= V1
lower lip = V3

Front 4

how many sections are there to the Maxillary n (V2)?

name them.

Back 4

4:
1. Cranial Cavity
2. Pterygopalatine Fossa
3. Infraorbital Canal
4. Facial Branches

Front 5

Path of the maxillary n. :
1. The first section of the maxillary n. is in the cranial cavity, it comes from the trigeminal ganglion, along the wall of the cavernous sinus, and exits through the _____________.

Back 5

foramen rotundum

Front 6

Path of the maxillary n.:
2. the second section of the maxillary n. is in the pterygopalatine fossa to the ________________ and then to the infraorbital canal in the orbit

Back 6

inferior orbital fissure

Front 7

Path of the maxillary n.:
3. the 3rd section of the maxillary n. is when the n. enters the infraorbital canal to become the __________ n. and then exits the maxilla through the _____________

Back 7

infraorbital n.

infraorbital foramen

Front 8

Path of the maxillary n.:
4. the 4th section of the maxillary n. is when the terminal branches of the infraorbital n. are given off and distributed to the surrounding facial tissues (except _________(V1) and _________(V3)

Back 8

to the tip of the nose (V1)& the lower lip (V3)

Front 9

the ________ _____ is the pyramidal shaped cavity (1 on each side) just inferior to the apex of the orbit, posterior to the maxillary sinus and deep to the zygomatic arch; it has 7 openings going in or out

Back 9

the pterygopalatine fossa

Front 10

determine which of the following 7 openings in the pterygopalatine canal is post, inferior, medial, lateral or superior/anterior:
1) foramen rotundum, 2) palatine canal, 3) inferior orbital fissue, 4) pterygoid canal, 5) pterygomaxillary fissure, 6) sphenopalatine foramen, 7) palatovaginal canal

Back 10

1) foramen rotundum (posterior)
2) palatine canal (inferior)
3) inferior orbital fissure (sup/ant)
4) pterygoid canal (posterior)
5) pterygomaxillary fissure (lateral)
6) sphenopalatine fissure (medial)
7) palatovaginal canal (posterior)

Front 11

what does the pterygopalatine fossa contain?
1 ganglion, 1 nerve branch, branches from 1 a.

Back 11

pterygopalatine ganglion
maxillary n. (V2)
maxillary a. branches

Front 12

trace the main pathway of the maxillary n. (V2)

Back 12

trigeminal ganglion --> cranial cavity --> foramen rotundum --> pterygopalatine fossa --> inferior orbital fissure --> orbit --> infraorbital canal --> infraorbital n. --> infraorbital foramen --> face --> terminal facial branches

Front 13

What is/are the cranial cavity branches of V2?

Back 13

the meningeal n is the only branch that comes off in the cranial cavity

Front 14

there are 7 branches that come off of the maxillary n. (then giving off other branches) in the pterygopalatine fossa, name the main 7.

Back 14

1) pterygopalatine nn (btw V2 and ganglion), 2) orbital branches,
3) nasal branches (posterior superior/inferior lateral nasal nn & nasopalatine n. (of septim))
4) pharyngeal n., 5) palatine nn (greater and lesser palatine nn, from the ganglion), 6) zygomatic n. (communicating branch, zygomaticofacial and zygomaticotemporal nn), 7) posterior superior alveolar n.

Front 15

there are 2 branches that come off the maxillary n. as it enters infraorbital canal and before it enters the inferior orbital fissure

Back 15

1) the middle superior alveolar n.
2) the anterior superior alveolar n.

Front 16

there are 3 facial branches of the infraorbital n. (maxillary n. V2) given off after the nerve exits the infraorbital foramen

Back 16

1) inferior palpebral n
2) lateral nasal n.
3) superior labial n.

Front 17

where do the parasympathetic fibers and sympathetic fibers of V2 go?

synapses?

Back 17

parasympathetic fibers: (synapsing fibers) go to the lacrimal gland or mucous membranes of orbit, nose, palate, and pharynx

sympathetic fibers (passing (non-synapsing)) go to the bv of the head

Front 18

trace the parasympathetic fibers through the pterygopalatine ganglion to the lacrimal gland:

Back 18

superior salivatory nucleus (cell bodies) --pre--> facial n. (VII) --pre--> greater petrosal n. --pre--> n. of the pterygoid canal --pre--> pterygopalatine ganglion (synapse) --post--> pterygopalatine nn --post--> maxilary n. (V2) --post--> zygomatic n. (V2) --post--> communicating branch --post--> lacrimal n. (V1) --post--> lacrimal gland

Front 19

trace the parasympathetic fibers through the pterygopalatine ganglion to the mucous membranes of the orbit, nose, palate, and pharynx

Back 19

superior salivatory nuclues (cell bodies) --pre--> CN VII --pre--> greater petrosal n. --pre--> n. to pterygoid canal --pre--> pterygopalatine ganglion (synapse) --post--> pterygopalatine nn --post--> maxillary n. (V2) --post--> mucous membranes of orbit, palate, nose, and pharynx

Front 20

trace the sympathetic fibers through the pterygopalatine ganglion to the bv of the head

Back 20

IMLCC --pre--> ventral root --pre--> white rami communicans --pre--> superior cervical ganglion (synapse) --post--> internal carotid a --post--> deep petrosal n. --post--> n. to the ptyerygoid canal --post--> pterygopalatine ganglion (NO SYNAPSE) --post--> blood vessels of the head

Front 21

the sensory nn. (of the mucous membranes) destined for the maxillary n. have their cell bodies in the ___________; these sensory nn. are:
the nasopalatine nn, the posterior superior & inferior lateral nasal nn, the pharyngeal n., and the greater and lesser palatine nn.

Back 21

trigeminal ganglion

Front 22

the maxillary artery is a branch of the _________ _________ a.; it originates within the substance of the parotid gland and passes anteriorly to the infratemporal fossa --> pterygomaxially fissure --> pteryopalatine fossa where it divides into 3 portions:

Back 22

external carotid a.

3 portions:
1st part:mandibular portion: btw neck of mandible andsphenomandibular lig
2nd part: pterygoid portion: lateral ot medial to the lateral pterygoid m.
3rd part: pterygopalatine portion: within the pterygopalatine fossa

Front 23

Know 2 of the mandibular branches of the maxillary a. and what they innervate

Back 23

1) inferior alveolar (inf)- lower teeth, buccal gingivae, chin, and lower lip (with mylohyoid branch)
2) middle meningeal a. (sup)- dura mater, & bone marrow of cranial cavity walls

Front 24

know that the pterygoid branches of the maxillary a. run with the mandibular n (CN V3) and supply what?

Back 24

the mm. of mastication

Front 25

know 4 of the pterygopalatine branches of the maxillary a. and what they innervate

Back 25

1) posterior superior alveolar a: molar teeth, adjacent gingiva, and maxillary sinus
2) infraorbital a: inferior rectus & inferior oblique mm, lacrimal sac, incisor & canine teeth, maxillary sinus, face
3) sphenopalatine a. (terminal branch)- lateral wall of nasal cavity, paranasal sinuses and nasal septum
4) descending palatine a.- greater palatine a (hard palate and anterior septal wall of nasal cavity) & lesser palatine a. (soft palate)

Front 26

which artery, when ruptured, can lead to a severe nosebleed?

Back 26

the sphenopalatine a.