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ANATOMY OF NOSE AND PARANASAL SINUSES

ANATOMY OF NOSE AND PARANASAL SINUSES. By assisstant lecture/ Sara mostafa. ANATOMY OF NOSE EXTERNAL NOSE. External nose is shaped like a pyramid with its root up and base directed downwards . *root *tip *dorsum nasi *bridge of the nose * alae * clomella

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ANATOMY OF NOSE AND PARANASAL SINUSES

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  1. ANATOMY OF NOSE ANDPARANASAL SINUSES By assisstant lecture/ Sara mostafa

  2. ANATOMY OF NOSEEXTERNAL NOSE • External nose is shaped like a pyramid with its root up and base directed downwards. *root *tip *dorsum nasi *bridge of the nose *alae *clomella • Osteocartilagenous framework: Upper 1/3rd - bony Lower 2/3rd – cartilagenous

  3. ANATOMY OF NOSEEXTERNAL NOSE • Bony framework • Nasal bones • Nasal processes of frontal bone • Frontal processes of maxilla • Cartilagenous framework • Upper lateral cartilages • Lower lateral cartilages • Alar cartilages • Septal cartilage

  4. ANATOMY OF NOSEEXTERNAL NOSE • Nasal valve: Formed by lower edge of upper lateral cartilages, the anterior end of inferior turbinate and adjacent nasal septum. • Cottle’s test: used in nasal obstruction due to abnormality of nasal valve.

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