NASAL CAVITY

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NASAL CAVITY. Skeletal Framework. Parts: Alae. Dorsum. Bridge. Skeletal components: Nasal bones. Frontal process of maxillary. Nasal part of frontal bone. Skeletal Framework. Cartilages: Septal. Lateral. Alar. Mucous Membranes. Sensory innervation: - PowerPoint PPT Presentation

Text of NASAL CAVITY

  • NASAL CAVITY

  • Skeletal FrameworkParts:Alae.Dorsum.Bridge.Skeletal components:Nasal bones.Frontal process of maxillary.Nasal part of frontal bone.

  • Skeletal FrameworkCartilages:Septal.Lateral.Alar.

  • Mucous MembranesSensory innervation:Anterior ethmoidal nerves.Nasopalatine nerves.

  • Mucous MembranesMotor:Parasympathetics:Via CN VII.To:Pterygopalatine ganglion.To:Mucous glands:Via branches of maxillary nerve.

  • Mucous MembranesMotor:Sympathetics:To:Blood vessels.From:Superior cervical ganglion.Via:Maxillary nerve.

  • Paranasal SinusesMaxillary:Largest.Present at birth.Opens to:Middle meatus.Via semilunar hiatus.Nerve supply:Superior alveolar nerve.Infraorbital nerves.

  • Paranasal SinusesFrontal:Paired.Opens to:Middle meatus.Via frontonasal duct.Nerve supply:Supratrochlear nerves.Supraorbital nerves.

  • Paranasal SinusesSphenoidal:Paired.Opens to:Nasal cavity.Via sphenoethmoidal recess.Nerve supply:Maxillary nerves.Ethmoidal nerves.

  • Paranasal SinusesEthmoidal:Group of ethmoidal air cells.Anterior and middle cells:Open into middle meatus.Posterior air cells:Open into superior meatus.

  • NasopharynxFrom base of skull to soft palate.Pharyngeal tonsils:Embedded in posterior wall.Enlarged = adenoids.

  • NasopharynxSalpingopharyngeal fold (muscle):Created by named muscle.Muscle extends from auditory tube cartilage to palatopharyngeus muscle.Opening for:Eustachian tube.Torus tubarius.