1 NASAL CAVITY

2 Skeletal Framework Parts: Skeletal components: Alae. Dorsum. Bridge.Nasal bones. Frontal process of maxillary. Nasal part of frontal bone.

3 Skeletal Framework Cartilages: Septal. Lateral. Alar.

4 Mucous Membranes Sensory innervation: Anterior ethmoidal nerves.Nasopalatine nerves.

5 Mucous Membranes Motor: Parasympathetics: Via CN VII. To:Pterygopalatine ganglion. Mucous glands: Via branches of maxillary nerve.

6 Mucous Membranes Motor: Sympathetics: To: Blood vessels. From:Superior cervical ganglion. Via: Maxillary nerve.

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

8 Paranasal Sinuses Frontal: Paired. Opens to: Nerve supply:Middle meatus. Via frontonasal duct. Nerve supply: Supratrochlear nerves. Supraorbital nerves.

9 Paranasal Sinuses Sphenoidal: Paired. Opens to: Nerve supply:Nasal cavity. Via sphenoethmoidal recess. Nerve supply: Maxillary nerves. Ethmoidal nerves.

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11 Paranasal Sinuses Ethmoidal: Group of ethmoidal air cells.Anterior and middle cells: Open into middle meatus. Posterior air cells: Open into superior meatus.

12 Nasopharynx From base of skull to soft palate. Pharyngeal tonsils:Embedded in posterior wall. Enlarged = adenoids.

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