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Arterial Supply Venous Drainage Innervation

External nose Both ICA and ECA

- ICAophthalmicdorsal nasal artery

- ICAophthalmicanterior ethmoidal arteryexternal nasal

artery

- ECAfacialsuperior labial, angular, lateral nasal

- ECAimaxinfraorbital artery

F

M

O

All drain to EJV/IJV/Cavernous sinus

- Dorsal nasal vein & external nasal veinsuperior

ophthalmic veincavernous sinus

- anterior/posterior ethmoidal veinophthalmic

veincavernous sinus

- facial vein infraorbital veincavernous sinus

- anterior posterior facial vein cavernous sinus &

EJV

- angular veinsuperior ophthalmic vein

cavernous sinus- sphenopalatine veincavernous sinus

All from CN V

- V1 (ophthalmic) - Supratrochlear and infratrochlear br

- V2 (maxillary) - Infraorbital nerve

Nasal Septum Both ICA and ECA

- ICAophthalmicAEA/PEA

- ECAimaxsphenopalatine, GPA

- facialSLA

From CNV and pterygopalatine ganglion

- V1 (ophthalmic)nasociliaryAEN

- V2 (maxillary)nasopalatine nerve

- branches from pterygopalatine ganglion

Lateral nasal

walls

Both ICA and ECA

- ICAophthalmicAEA (larger than PEA)

supplies anterior 1/3 of lateral wall

supplies anterior 1/3 of septum

anastomoses with SPA

terminal branch is Ext nasal artery

- ICAophthalmicPEA

supplies superior turb

posterior part of septum- ECAimaxsphenopalatine

supplies middle and inferior turbs via lateral posterior nasal

artery

posterior septal branch (running across face of sphenoid

then divide onto septum

- ECAimaxdescending palatine artery

supplies lower posterior nasal cavity and hard (greater

palatine) and soft palate (lesser palatine)

General sensory and Special sensory

General sensory

All from CN V

- V1 (ophthalmic)nasociliaryAEN (leaves orbit via AE foramen with

AEA, travels along lateral margin of cribiform plate, reaches nasal cavity

through ethmoidal slit at the side of crista galli. Supplies Anterior part of

septum, superior, middle, inferior turbinates

- V1 (ophthalmic)nasociliaryPEN. Not always present. Supplies

posterior nasal cavity- V1 (ophthalmic)frontalsupratrochlear, supraorbital nerves. Supplies

frontal sinus

- V2 (maxillary)infraorbital nerve. Supplies vestibule and floor of nose

- V2 (maxillary)Superior alveolar nerves (anterior from IOC, posterior

from PTF).Anterior SAN supplies maxillary sinus

- V2 (maxillary)branches to the PPG: nasopalatine, greater palatine

nerve, posterior superior/inferior lateral nasal branches

Special sensory

Parasympathetic and Sympathetic

- SSN to Nervus intermedius to GSPN, which joins deep petrosal nerve

which forms vidian nervevidian canalPPGbranches in nasal cavity

- SCN to ICA plexus to deep petrosal nerve to GPSN to vidian to PPG

BRANCHES OF ECA alternative way of remembering:

http://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=RBCaiIc0s7frGM&tbnid=RovICU1CXQSfxM:&ved=0CAUQjRw&url=http://www.ocnosejob.com/newport-beach-rhinoplasty/nasal-anatomy&ei=VzbvU9aNIom78gW23IGoBg&bvm=bv.73231344,d.dGc&psig=AFQjCNHAFzYW0K7Mj3cui7OOXdXLgXANgg&ust=1408272321286118http://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=RBCaiIc0s7frGM&tbnid=RovICU1CXQSfxM:&ved=0CAUQjRw&url=http://www.ocnosejob.com/newport-beach-rhinoplasty/nasal-anatomy&ei=VzbvU9aNIom78gW23IGoBg&bvm=bv.73231344,d.dGc&psig=AFQjCNHAFzYW0K7Mj3cui7OOXdXLgXANgg&ust=1408272321286118http://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=RBCaiIc0s7frGM&tbnid=RovICU1CXQSfxM:&ved=0CAUQjRw&url=http://www.ocnosejob.com/newport-beach-rhinoplasty/nasal-anatomy&ei=VzbvU9aNIom78gW23IGoBg&bvm=bv.73231344,d.dGc&psig=AFQjCNHAFzYW0K7Mj3cui7OOXdXLgXANgg&ust=1408272321286118http://www.google.com.sg/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=RBCaiIc0s7frGM&tbnid=RovICU1CXQSfxM:&ved=0CAUQjRw&url=http://www.ocnosejob.com/newport-beach-rhinoplasty/nasal-anatomy&ei=VzbvU9aNIom78gW23IGoBg&bvm=bv.73231344,d.dGc&psig=AFQjCNHAFzYW0K7Mj3cui7OOXdXLgXANgg&ust=1408272321286118

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BRANCHES OF ICABRANCHES OF IMAX

The (internal) maxillary arteryis the larger of the two terminal branches of the external

carotid artery.

Origin and course

The maxillary artery's origin is behind the neck of the mandible, and is at first imbedded in the

substance of theparotid gland. From there it passes forward between the ramus of the

mandible and thesphenomandibular ligament, and then runs, either superficial or deep to the

lateral pterygoid muscle, to thepterygopalatine fossa. It supplies the deep structures of the

face.

The maxillary artery is divided into three portions by its relation to the lateral pterygoid

muscle:

first (mandibular) part - posterior to lateral pterygoid muscle (five branches)

second (pterygoid or muscular) part - within lateral pterygoid muscle (fivebranches)

third (pterygopalatine) part- anterior to lateral pterygoid muscle (six branches

including terminal branch)

Branches

First (mandibular) part

Five branches, each of which enters a bony foramen:

deep auricular artery (enters squamotympanic fissure)

anterior tympanic artery (enters squamotympanic fissure)

middle meningeal artery (enters foramen spinosum)

accessory meningeal artery (enters foramen ovale)

inferior alveolar artery (enters mandibular foramen)

o artery to mylohyoid

Second (pterygoid or muscular) part

Five branches although pterygoid branches are irregular in their number and origin:

anterior deep temporal branches

posterior deep temporal branches

pterygoid branches

masseteric artery

buccinator artery

Third (pterygopalatine) part

Six branches including the terminal branch:

posterior superior alveolar artery

infraorbital artery (entersinfrerior orbital fissure)

artery of thepterygoid canal

pharyngeal artery (enters palatovaginal canal)

greater (descending) palatine artery (entersgreater palatine foramen)

sphenopalatine artery -terminal branch (enterssphenopalatine foramen)

A longmnemonic to remember these branches is:

DAM I AM Piss Drunk But

http://radiopaedia.org/articles/external-carotid-artery-1http://radiopaedia.org/articles/external-carotid-artery-1http://radiopaedia.org/articles/parotid-glandhttp://radiopaedia.org/articles/mandiblehttp://radiopaedia.org/articles/missing?article%5Btitle%5D=sphenomandibular-ligamenthttp://radiopaedia.org/articles/pterygopalatine-fossahttp://radiopaedia.org/articles/missing?article%5Btitle%5D=deep-auricular-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=anterior-tympanic-arteryhttp://radiopaedia.org/articles/middle-meningeal-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=accessory-meningealhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=inferior-alveolar-arteryhttp://radiopaedia.org/articles/deep-temporal-branches-1http://radiopaedia.org/articles/masseteric-arteryhttp://radiopaedia.org/articles/buccinator-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=posterior-superior-alveolar-arteryhttp://radiopaedia.org/articles/infraorbital-arteryhttp://radiopaedia.org/articles/inferior-orbital-fissurehttp://radiopaedia.org/articles/pterygoid-canalhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=pharyngeal-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=greater-descending-palatine-arteryhttp://radiopaedia.org/articles/greater-palatine-foramenhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=sphenopalatine-arteryhttp://radiopaedia.org/articles/sphenopalatine-foramenhttp://radiopaedia.org/articles/maxillary-artery-branches-mnemonichttp://radiopaedia.org/articles/maxillary-artery-branches-mnemonichttp://radiopaedia.org/articles/sphenopalatine-foramenhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=sphenopalatine-arteryhttp://radiopaedia.org/articles/greater-palatine-foramenhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=greater-descending-palatine-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=pharyngeal-arteryhttp://radiopaedia.org/articles/pterygoid-canalhttp://radiopaedia.org/articles/inferior-orbital-fissurehttp://radiopaedia.org/articles/infraorbital-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=posterior-superior-alveolar-arteryhttp://radiopaedia.org/articles/buccinator-arteryhttp://radiopaedia.org/articles/masseteric-arteryhttp://radiopaedia.org/articles/deep-temporal-branches-1http://radiopaedia.org/articles/missing?article%5Btitle%5D=inferior-alveolar-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=accessory-meningealhttp://radiopaedia.org/articles/middle-meningeal-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=anterior-tympanic-arteryhttp://radiopaedia.org/articles/missing?article%5Btitle%5D=deep-auricular-arteryhttp://radiopaedia.org/articles/pterygopalatine-fossahttp://radiopaedia.org/articles/missing?article%5Btitle%5D=sphenomandibular-ligamenthttp://radiopaedia.org/articles/mandiblehttp://radiopaedia.org/articles/parotid-glandhttp://radiopaedia.org/articles/external-carotid-artery-1http://radiopaedia.org/articles/external-carotid-artery-1