1 / 123

Functions and Anatomy of the Nose and Paranasal Sinuses

This text provides a comprehensive overview of the functions and anatomy of the nose, nasal cavity, and paranasal sinuses. It covers topics such as respiratory function, olfaction, paranasal sinus resonance, and common investigations for nasal diseases.

hansenk
Download Presentation

Functions and Anatomy of the Nose and Paranasal Sinuses

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. بسم الله الرحمن الرحيم NOSE I & IV DR. SAMI ALHARETHY associate. PROF. FACIALPLASTIC CONSULTANT KSU

  2. Functions Of The Nose • Respiratory channel • Warming and humidifying inspired air • Cleaning and filtering inspired air • Olfaction

  3. Function of Paranasal Sinuses • to act as resonators to the voice • They also reduce the weight of the skull • When the apertures of the sinuses are blocked or they become filled with fluid, the quality of the voice is markedly changed

  4. ANATOMY OF SINO-NASAL TRACT • External nose • Nasal cavity • Paranasal sinuses

  5. Anatomy of the External Nose

  6. THE NASAL CAVITY • Nasal Vestibule • Nasal Cavity Proper

  7. THE NASAL VESTIBULE

  8. THE NASAL CAVITY • Roof • Floor • Lateral wall • Medial wall (septum)

  9. The Roof

  10. The Floor

  11. The Medial Wall (Nasal Septum)

  12. Lateral Nasal Wall

  13. Lateral Nasal Wall

  14. The Lining Mucosa • Respiratory mucosa • Olfactory mucosa • skin

  15. The Olfactory Mucosa

  16. The Respiratory Mucosa

  17. Arterial Blood Supply • External Carotid • Maxillary • Facial • Internal Carotid • Ophthalmic

  18. Blood Supply Of The Nasal Cavity Lateral Wall Nasal Septum

  19. Venous Drainage • Facial vein Internal jugular • Angular vein Ophthalmic Cavernous sinus

  20. Venous Drainage

  21. Lymphatic Drainage • Submandibular • Retropharyngeal • Superior deep cervical

  22. Nerve Supply Of The Nasal Cavity • Olfactory • General sensory: Trigeminal nerve • Autonomic: sphenopalatine ganglion

  23. Olfactory Nerve Supply

  24. Sensory Nerve Supply • Ophthalmic and maxillary branches of the trigeminal

  25. ANATOMY OF THE PARANASAL SINUSES

  26. The Maxillary Sinus

  27. The Maxillary Sinus

  28. The Maxillary Sinus • Sinus ostium located in the middle meatus

  29. The Ethmoid Sinuses

  30. The Ethmoid Sinuses

  31. The Ethmoid sinuses • Anterior ethmoids: drain into the middle meatus • Posterior ethmoids: drain into superior meatus

  32. The Frontal Sinus • Rarely present at birth; usually not visible until age 2 • Great variability in size; congenitally absent in 5%

  33. The Sphenoid Sinus

  34. The Sphenoid Sinus

  35. Lining of the Sinuses • Pseudostratified columnar epithelium with goblet cells (respiratory epithelium) which is continuous with the nasal epithelium

  36. Blood Supply • Branches from the internal and external carotids

  37. Nerve Supply • Branches from the trigeminal

  38. Investigation of Nasal Diseases • Endoscopy • Rhinometry • Measurement of olfaction • Skin allergy test • Mucociliary clearance tests • Imaging

  39. Endoscopy

  40. Rhinometry • Objective measurement of the nasal resistance or the flow of air in the nasal cavities Poiseuille's Law

  41. Skin allergy test

  42. Imaging of The Paranasal Sinuses • Plain X-Rays • CT scan • MRI

  43. Occipitomental View (Water’s View)

  44. Occipito-frontal View (Caldwell View)

  45. Lateral View

  46. Submento-vertical view

  47. CT Paranasal Sinuses Axial Coronal

  48. Normal Axial

More Related