NASAL CAVITYNASAL CAVITY

Skeletal FrameworkSkeletal FrameworkParts:Parts:

Alae.Alae.Dorsum.Dorsum.Bridge.Bridge.

Skeletal components:Skeletal components:Nasal bones.Nasal bones.Frontal process of maxillary.Frontal process of maxillary.Nasal part of frontal bone.Nasal part of frontal bone.

Skeletal FrameworkSkeletal FrameworkCartilages:Cartilages:

Septal.Septal.Lateral.Lateral.Alar.Alar.

Mucous MembranesMucous MembranesSensory innervation:Sensory innervation:

Anterior ethmoidal nerves.Anterior ethmoidal nerves.Nasopalatine nerves.Nasopalatine nerves.

Mucous MembranesMucous MembranesMotor:Motor:

Parasympathetics:Parasympathetics:Via CN VII.Via CN VII.To:To:

Pterygopalatine ganglion.Pterygopalatine ganglion.To:To:

Mucous glands:Mucous glands:Via branches of maxillary Via branches of maxillary

nerve.nerve.

Mucous MembranesMucous MembranesMotor:Motor:

Sympathetics:Sympathetics:To:To:

Blood vessels.Blood vessels.From:From:

Superior cervical ganglion.Superior cervical ganglion.Via:Via:

Maxillary nerve.Maxillary nerve.

Paranasal SinusesParanasal SinusesMaxillary:Maxillary:

Largest.Largest.Present at birth.Present at birth.Opens to:Opens to:

Middle meatus.Middle meatus.Via semilunar hiatus.Via semilunar hiatus.

Nerve supply:Nerve supply:Superior alveolar nerve.Superior alveolar nerve.Infraorbital nerves.Infraorbital nerves.

Paranasal SinusesParanasal SinusesFrontal:Frontal:

Paired.Paired.Opens to:Opens to:

Middle meatus.Middle meatus.Via frontonasal duct.Via frontonasal duct.

Nerve supply:Nerve supply:Supratrochlear nerves.Supratrochlear nerves.Supraorbital nerves.Supraorbital nerves.

Paranasal SinusesParanasal SinusesSphenoidal:Sphenoidal:

Paired.Paired.Opens to:Opens to:

Nasal cavity.Nasal cavity.Via sphenoethmoidal recess.Via sphenoethmoidal recess.

Nerve supply:Nerve supply:Maxillary nerves.Maxillary nerves.Ethmoidal nerves.Ethmoidal nerves.

Paranasal SinusesParanasal SinusesEthmoidal:Ethmoidal:

Group of ethmoidal air cells.Group of ethmoidal air cells.Anterior and middle cells:Anterior and middle cells:

Open into middle meatus.Open into middle meatus.

Posterior air cells:Posterior air cells:Open into superior meatus.Open into superior meatus.

NasopharynxNasopharynxFrom base of skull to soft palate.From base of skull to soft palate.Pharyngeal tonsils:Pharyngeal tonsils:

Embedded in posterior wall.Embedded in posterior wall.Enlarged = adenoids.Enlarged = adenoids.

NasopharynxNasopharynxSalpingopharyngeal fold (muscle):Salpingopharyngeal fold (muscle):

Created by named muscle.Created by named muscle.Muscle extends from auditory tube Muscle extends from auditory tube

cartilage cartilage to palatopharyngeus muscle.to palatopharyngeus muscle.Opening for:Opening for:

Eustachian tube.Eustachian tube.Torus tubarius.Torus tubarius.