lec8-sem2-hnsweek3-20110822 (1)
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NERVES & BLOOD VESSELS OF NOSE ANDNASAL CAVITY.
Learning Objectives. At the end of lecture, students should be able to know:
Arterial supply of nose and nasal cavity.
Venous supply of nose and nasal cavity.
Nerve supply of nose and nasal cavity.
BLOOD SUPPLY OF NOSE AND NASAL CAVITY.
There is a rich blood supply to the nasal
cavity.
Blood supply comes from branches of both
the internal and external carotid artery.
Including branches of the facial artery and
maxillary artery.
Blood supply of nose and nasal cavity.
The arterial supply of medial and lateral walls ofnasal cavity is from five sources:
Anterior ethmoidal artery (from ophthalmicartery).
Posterior ethmoidal artery (from ophthalmicartery).
http://en.wikipedia.org/wiki/Internal_carotid_arteryhttp://en.wikipedia.org/wiki/External_carotid_arteryhttp://en.wikipedia.org/wiki/Facial_arteryhttp://en.wikipedia.org/wiki/Maxillary_arteryhttp://en.wikipedia.org/wiki/Internal_carotid_arteryhttp://en.wikipedia.org/wiki/External_carotid_arteryhttp://en.wikipedia.org/wiki/Facial_arteryhttp://en.wikipedia.org/wiki/Maxillary_arteryhttp://en.wikipedia.org/wiki/Maxillary_artery -
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Sphenopalatine artery (from maxillary artery).
Greater palatine artery (from maxillary artery).
superior labial artery (from facial artery).
Venous supply of nose.
Submucosal venous plexus.
BLOOD SUPPLY(MEDIAL WALL).
BLOOD SUPPLY(LATERAL WALL).
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Internal
External
Arterial Supply.
The arteries make a rich anastomosis in the region of thevestibule and anterior portion of the septum.
Sphenopalatine Artery.
The sphenopalatine artery(nasopalatine artery) is an artery of the
head.
commonly known as the artery of
epistaxis.
http://en.wikipedia.org/wiki/Arteryhttp://en.wikipedia.org/wiki/Artery -
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Course of Sphenopalatine Artery.
The sphenopalatine artery passes through the sphenopalatine foramen
into the cavity of the nose.
it gives offposterior lateral nasal branches.
It ends on the nasal septum as theposterior septal branches.
Greater Palatine Artery.
The greater palatine artery is a terminal
branch of the maxillary artery.
It branches off the maxillary artery in the
pterygopalatine fossa.
It descends through the greater palatine
foramen.
It anastomosis through the incisive canal with the sphenopalatine
artery to supply the nasal cavity.
Anterior Ethmoidal Artery.
It accompanies the nasociliary nerve through
the anterior ethmoidal canal
Nasal branches:
They descend into the nasal cavity
supply branches to the lateral wall and
septum of the nose. a terminal branch which appears on the
dorsum of the nose between the nasal bone
and the lateral cartilage.
http://en.wikipedia.org/wiki/Nosehttp://en.wikipedia.org/wiki/Posterior_lateral_nasal_brancheshttp://en.wikipedia.org/wiki/Nasal_septumhttp://en.wikipedia.org/wiki/Posterior_septal_brancheshttp://en.wikipedia.org/wiki/Maxillary_arteryhttp://en.wikipedia.org/wiki/Pterygopalatine_fossahttp://en.wikipedia.org/wiki/Greater_palatine_foramenhttp://en.wikipedia.org/wiki/Greater_palatine_foramenhttp://en.wikipedia.org/wiki/Anastomosishttp://en.wikipedia.org/wiki/Incisive_canalhttp://en.wikipedia.org/wiki/Sphenopalatine_arteryhttp://en.wikipedia.org/wiki/Sphenopalatine_arteryhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Nasociliary_nervehttp://en.wikipedia.org/wiki/Anterior_ethmoidal_canalhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Lateral_wallhttp://en.wikipedia.org/wiki/Septumhttp://en.wikipedia.org/wiki/Nasal_bonehttp://en.wikipedia.org/wiki/Lateral_cartilagehttp://en.wikipedia.org/wiki/Nosehttp://en.wikipedia.org/wiki/Posterior_lateral_nasal_brancheshttp://en.wikipedia.org/wiki/Nasal_septumhttp://en.wikipedia.org/wiki/Posterior_septal_brancheshttp://en.wikipedia.org/wiki/Posterior_septal_brancheshttp://en.wikipedia.org/wiki/Maxillary_arteryhttp://en.wikipedia.org/wiki/Pterygopalatine_fossahttp://en.wikipedia.org/wiki/Greater_palatine_foramenhttp://en.wikipedia.org/wiki/Greater_palatine_foramenhttp://en.wikipedia.org/wiki/Greater_palatine_foramenhttp://en.wikipedia.org/wiki/Greater_palatine_foramenhttp://en.wikipedia.org/wiki/Anastomosishttp://en.wikipedia.org/wiki/Incisive_canalhttp://en.wikipedia.org/wiki/Sphenopalatine_arteryhttp://en.wikipedia.org/wiki/Sphenopalatine_arteryhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Nasociliary_nervehttp://en.wikipedia.org/wiki/Anterior_ethmoidal_canalhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Lateral_wallhttp://en.wikipedia.org/wiki/Septumhttp://en.wikipedia.org/wiki/Nasal_bonehttp://en.wikipedia.org/wiki/Lateral_cartilage -
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Posterior Ethmoidal Artery. It is smaller than the anterior ethmoidal
artery.
Route:
It passes through theposterior ethmoidal
canal.
It suppliesposterior ethmoidal cells, and,
entering the cranium.
Branches and supply of posterior ethmoidalartery.
When it enters the cranium it gives off a meningeal branch to the dura
materand nasal branches.
It then descends into thenasal cavity through apertures in the
cribriform plate.
It supplies the posteriorethmoidal air sinuses, dura materof the
anterior cranial fossa, and the upper part of the nasal mucosa.
Septal branch of SuperiorLabial Artery.
It runs along the edge of the upper lip, lying
between the mucous membrane and the
Orbicularis oris.
It supplies the upper lip. It ascends to the nose.
a septal branch ramifies on the nasal septum
It supplies the ala of the nose.
http://en.wikipedia.org/wiki/Anterior_ethmoidal_arteryhttp://en.wikipedia.org/wiki/Anterior_ethmoidal_arteryhttp://en.wikipedia.org/wiki/Posterior_ethmoidal_canalhttp://en.wikipedia.org/wiki/Posterior_ethmoidal_canalhttp://en.wikipedia.org/wiki/Posterior_ethmoidal_cellshttp://en.wikipedia.org/wiki/Craniumhttp://en.wikipedia.org/wiki/Dura_materhttp://en.wikipedia.org/wiki/Dura_materhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Cribriform_platehttp://en.wikipedia.org/wiki/Ethmoidal_air_sinuseshttp://en.wikipedia.org/wiki/Dura_materhttp://en.wikipedia.org/wiki/Anterior_cranial_fossahttp://en.wikipedia.org/w/index.php?title=Nasal_mucosa&action=edit&redlink=1http://en.wikipedia.org/wiki/Upper_liphttp://en.wikipedia.org/wiki/Mucous_membranehttp://en.wikipedia.org/wiki/Orbicularis_orishttp://en.wikipedia.org/wiki/Nasal_septumhttp://en.wikipedia.org/wiki/Ala_of_the_nosehttp://en.wikipedia.org/wiki/Anterior_ethmoidal_arteryhttp://en.wikipedia.org/wiki/Anterior_ethmoidal_arteryhttp://en.wikipedia.org/wiki/Anterior_ethmoidal_arteryhttp://en.wikipedia.org/wiki/Posterior_ethmoidal_canalhttp://en.wikipedia.org/wiki/Posterior_ethmoidal_canalhttp://en.wikipedia.org/wiki/Posterior_ethmoidal_cellshttp://en.wikipedia.org/wiki/Craniumhttp://en.wikipedia.org/wiki/Dura_materhttp://en.wikipedia.org/wiki/Dura_materhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Cribriform_platehttp://en.wikipedia.org/wiki/Ethmoidal_air_sinuseshttp://en.wikipedia.org/wiki/Dura_materhttp://en.wikipedia.org/wiki/Anterior_cranial_fossahttp://en.wikipedia.org/w/index.php?title=Nasal_mucosa&action=edit&redlink=1http://en.wikipedia.org/wiki/Upper_liphttp://en.wikipedia.org/wiki/Mucous_membranehttp://en.wikipedia.org/wiki/Orbicularis_orishttp://en.wikipedia.org/wiki/Nasal_septumhttp://en.wikipedia.org/wiki/Ala_of_the_nose -
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Venous Supply of Nose.
A rich submucosal venous plexus
deep to nasal mucosa drains into:
Sphenopalatine, facial, and
ophthalmic veins.
Venous blood from the external
nose drains mostly into:
FACIAL VEIN via ANGULAR
and LATERAL NASAL VEINS.
Nerve supply of nose.
Sensory (Trigeminal nerve).Anterior superior Anterior-ethmoidal nerve (ophthalmic nerve).Anterior inferior Anterior superior alveolar nerve (maxillary nerve).Posterior superior Posterior superior, lateral nasal (maxillary
nerve).
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Innervation of the nasal cavity responsible for the sense of
smell is via the olfactory nerve.
It sends microscopic fibers from the olfactory bulb through
the cribiform plate to reach the top of the nasal cavity. General sensory innervation is by branches of the trigeminalnerve (V1 & V2):
Nasociliary nerve (V1).
Nasopalatine nerve (V2).
Posterior nasal branches ofMaxillary nerve (V2) .
The entire nasal cavity is innervated by autonomic fibers.
Nasociliary Nerve. It passes through the anterior ethmoidal opening as the
anterior ethmoidal nerve.
It then enters the cranial cavity just above the cribriform
plate of the ethmoid bone.
It supplies branches to the mucous membrane of the nasal
cavity.
It finally emerges between the inferior border of the nasalbone and the side nasal cartilages as the external nasal
branch.
Branches.
The nasociliary nerve gives off the
following branches:
posterior ethmoidal nerve. long ciliary nerves.
infratrochlear nerve.
communicating branch to the
ciliary ganglion (long root of the
ciliary ganglion)
http://en.wikipedia.org/wiki/Olfactory_nervehttp://en.wikipedia.org/wiki/Olfactory_bulbhttp://en.wikipedia.org/wiki/Cribiform_platehttp://en.wikipedia.org/wiki/Trigeminal_nervehttp://en.wikipedia.org/wiki/Trigeminal_nervehttp://en.wikipedia.org/wiki/Nasociliary_nervehttp://en.wikipedia.org/wiki/Nasopalatine_nervehttp://en.wikipedia.org/wiki/Maxillary_nervehttp://en.wikipedia.org/wiki/Olfactory_nervehttp://en.wikipedia.org/wiki/Olfactory_bulbhttp://en.wikipedia.org/wiki/Olfactory_bulbhttp://en.wikipedia.org/wiki/Cribiform_platehttp://en.wikipedia.org/wiki/Trigeminal_nervehttp://en.wikipedia.org/wiki/Trigeminal_nervehttp://en.wikipedia.org/wiki/Nasociliary_nervehttp://en.wikipedia.org/wiki/Nasopalatine_nervehttp://en.wikipedia.org/wiki/Maxillary_nerve -
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anterior ethmoidal nerve.
NasopalatineNerve.
It enters the nasal cavity
through the
sphenopalatine foramen,
passes across the roof of
the nasal cavity below
the orifice of thesphenoidal sinus to reach
the septum.
It supplies thepalatal structures around the upper central and
lateral incisors and the canines (the upper front six teeth).
Maxillary Nerve.
The maxillary nerve (V2) is one of the three branches of the
trigeminal nerve.
Its function is the transmission of sensory fibers from the maxillary
teeth, the skin between thepalpebral fissure and the mouth, and the
nasal cavity and sinuses.
Nasal branches of maxillarynerve.
http://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Sphenopalatine_foramenhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Sphenoidal_sinushttp://en.wikipedia.org/wiki/Septumhttp://en.wikipedia.org/wiki/Palatalhttp://en.wikipedia.org/wiki/Canine_toothhttp://en.wikipedia.org/wiki/Trigeminal_nervehttp://en.wikipedia.org/wiki/Palpebral_fissurehttp://en.wikipedia.org/wiki/Mouthhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Sphenopalatine_foramenhttp://en.wikipedia.org/wiki/Nasal_cavityhttp://en.wikipedia.org/wiki/Sphenoidal_sinushttp://en.wikipedia.org/wiki/Septumhttp://en.wikipedia.org/wiki/Palatalhttp://en.wikipedia.org/wiki/Canine_toothhttp://en.wikipedia.org/wiki/Trigeminal_nervehttp://en.wikipedia.org/wiki/Palpebral_fissurehttp://en.wikipedia.org/wiki/Mouth -
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the maxillary nerve passes through the cavernous sinus and exits theskull through the foramen rotundum.
At its termination it divides branches into nose, the lowereyelid, and
the upperlip, joining with filaments of the facial nerve.
Kiesselbach's plexus. Kiesselbach's area, also Kiesselbach's plexus, Kiesselbach's
triangle, and Little's area, is a region in the anteroinferior part of the
nasal septum, where four arteries anastomose to form a vascular
plexus called Kiesselbach's plexus. The arteries are:
anterior ethmoid artery. great palatine artery.
sphenopalatine artery.
superior labial artery.
THANK YOU ALL.
http://en.wikipedia.org/wiki/Cavernous_sinushttp://en.wikipedia.org/wiki/Skullhttp://en.wikipedia.org/wiki/Foramen_rotundumhttp://en.wikipedia.org/wiki/Nosehttp://en.wikipedia.org/wiki/Eyelidhttp://en.wikipedia.org/wiki/Liphttp://en.wikipedia.org/wiki/Facial_nervehttp://en.wikipedia.org/wiki/Nasal_septumhttp://en.wikipedia.org/wiki/Anastomosishttp://en.wikipedia.org/wiki/Anterior_ethmoid_arteryhttp://en.wikipedia.org/wiki/Great_palatine_arteryhttp://en.wikipedia.org/wiki/Sphenopalatine_arteryhttp://en.wikipedia.org/wiki/Superior_labial_arteryhttp://en.wikipedia.org/wiki/Cavernous_sinushttp://en.wikipedia.org/wiki/Skullhttp://en.wikipedia.org/wiki/Foramen_rotundumhttp://en.wikipedia.org/wiki/Nosehttp://en.wikipedia.org/wiki/Eyelidhttp://en.wikipedia.org/wiki/Liphttp://en.wikipedia.org/wiki/Facial_nervehttp://en.wikipedia.org/wiki/Nasal_septumhttp://en.wikipedia.org/wiki/Anastomosishttp://en.wikipedia.org/wiki/Anterior_ethmoid_arteryhttp://en.wikipedia.org/wiki/Great_palatine_arteryhttp://en.wikipedia.org/wiki/Sphenopalatine_arteryhttp://en.wikipedia.org/wiki/Superior_labial_artery
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