锦州医科大学耳鼻喉课件 Anatomy of Nose.ppt

OTOLARYNGOLOGY Anatomy of Nose External nose Nasal cavity paranasal sinuses The external nose The external nose is triangular-shaped projection in the center of the face, consists of osteocartilaginous framework covered by muscles and skin. The external nose The external nose The external nose BONE AND CARTILAGE OF NOSE Nasal bone fracture DANGER TRIANGLE OF THE FACE Due to the special nature of the blood supply to the human nose and surrounding area, it is possible for retrograde infections from the nasal area to spread to the brain. For this reason, the area from the corners of the mouth to the region between the eyes, including the nose and maxilla, is known to doctors as the danger triangle of the face. Vein of external nose cavernous sinus Nasal cavity Nasal vestibule Nasal cavity proper Nasal cavity proper The roof . Anterior sloping part of the roof is formed by nasal bones; Posterior sloping part by the body of sphenoid bone;and the middle horizontal part, by the cribriform plate of ethmoid. Nasal cavity proper The floor . The floor of the nose is formed by the palatal process of the maxilla and the horizontal process of the palate bones. Nasal cavity proper Medial wall. Nasal septum. STRCTURE OF NASAL SEPTUM Septum deviation Result in－ Nasal obstruction Nasal bleeding Headache Anosmia Sinusitis External deformity Nasal cavity proper Laterior wall. Laterior wall of nasal cavity Nasal cavity proper Posterior naris (choanae) Ostiomeatal complex The ostiomeatal complex is the sinus hot spot, one of the most important anatomical regions with regard to sinus health and disease. That comprises maxillary sinus ostia,anterior ethmoid cells and their ostia,ethmoid infundibulum, hiatus semilunaris, and middle meatus. Nasal cavities: Microanatomy Mucosal lining Respiratory epithelium columnar goblet cells mucus blanket cilia Olfa