Anatomy of the nose

ANATOMY OF EXTERNAL NOSEANATOMY OF EXTERNAL NOSE

ANATOMY OF EXTERNAL NOSEANATOMY OF EXTERNAL NOSE

ANATOMY OF EXTERNAL NOSEANATOMY OF EXTERNAL NOSE

ANATOMY OF EXTERNAL NOSEANATOMY OF EXTERNAL NOSE

THE NASAL VESTIBULETHE NASAL VESTIBULE

The nasal cavityThe nasal cavity

The RoofThe Roof

The FloorThe Floor

The Medial Wall (Nasal Septum)The Medial Wall (Nasal Septum)

Lateral Nasal WallLateral Nasal Wall

Lateral Nasal WallLateral Nasal Wall

The Olfactory MucosaThe Olfactory Mucosa

Histology respiratory mucosaHistology respiratory mucosa

The Respiratory MucosaThe Respiratory Mucosa

Histology of respiratory epitheliumHistology of respiratory epithelium

Histology of the turbinatesHistology of the turbinates

Histology septumHistology septum

Olfactory mucosaOlfactory mucosa

Arterial Blood Supply

• External Carotid

– Maxillary

F i l– Facial

• Internal Carotid

– Ophthalmic

Arterial blood SupplyArterial blood Supply

Blood Supply Of The Nasal CavityBlood Supply Of The Nasal Cavity

Lateral Wall Nasal Septum

Kesselbach’s Plexus/Little’s Area

• ‐Anterior Ethmoid (Opth)

• ‐Superior Labial A (F i l)(Facial)

• ‐SphenopalatineSphenopalatine(maxillary)

• ‐Greater Palatine (maxillary)(maxillary)

Venous Drainage

• Facial vein

Internal jugular

• Angular vein

Ophthalmic

Cavernous sinus

Olfactory Nerve SupplyOlfactory Nerve Supply

Sensory Nerve Supply

• Ophthalmic and maxillaryOphthalmic and maxillary

branches of the trigeminalbranches of the trigeminal

Autonomic Nerve Supply

S h l ti li• Sphenopalatine ganglion

– Sympathetic: SCG

– Parasympathetic: SSN

ANATOMY OF THE PARANASALANATOMY OF THE PARANASAL SINUSES

ANATOMY OF THE PARANASAL SINUSES

The Maxillary SinusThe Maxillary Sinus

The Maxillary SinusThe Maxillary Sinus

The Maxillary SinusThe Maxillary Sinus

• Sinus ostium located in the middle meatus

The Ethmoid SinusesThe Ethmoid Sinuses

The Ethmoid SinusesThe Ethmoid Sinuses

The Ethmoid sinuses

• Anterior ethmoids:

drain into the middle

meatusmeatus

• Posterior ethmoids:

drain into superior

meatus

The Frontal SinusThe Frontal Sinus

The Frontal SinusThe Frontal Sinus

The frontal sinusThe frontal sinus

The Sphenoid SinusThe Sphenoid Sinus

The Sphenoid SinusThe Sphenoid Sinus

The Sphenoid SinusThe Sphenoid Sinus

The Sphenoid SinusThe Sphenoid Sinus