anatomy of nose
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ANATOMY OF NOSE
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PARTS OF NOSE
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External nose:
• Osteocartilagenous framework•bony part•cartilaginous part
• Nasal musculature
• Nasal skinpgmedicalworld.com
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OSTEOCARTILAGINOUS FRAMEWORK
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Internal nose:
• Vestibule of nose
• Nasal cavity proper• Lateral wall• Medial wall• Roof• Floor• Choanae
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LINING MEMBRANE OF INTERNAL NOSE
• Vestibule:-− Lined by skin containing hair, hair follicles,
sebaceous glands.
• Olfactory region:-− Mucous membrane.
• Respiratory region:-− Mucous membrane shows varible thickenings.
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Lateral wall
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Structures on lateral wall of nose
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Medial wall• Columellar septum
• Membranous septum
• Septum proper
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Roof •Anterior slope
•Middle horizontal
•Posterior slope
•Ant. 3/4th formed by palatine process of the maxilla•Post. 1/4th formed by the palatine bone.
Floor
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Arterial supply
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Venous drainage
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Nerve supply
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NERVE SUPPLY
• Olfactory nerves
• Nerves of common sensation• Ant. Ethmoidal nerve• Branches of sphenopalatine ganglion• Branches of infra-orbital nerve
• Autonomic nerves• Parasympathetic-greater superficial petrosal
nerve• Sympathetic-from T1 & T2
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LYMPHATIC DRAINAGE
• From ext. nose & ant. Part of the nasal cavity : into submandibular nodes.
• Rest of the nasal cavity : upper jugular nodes either directly or through the retropharyngeal nodes.
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THANK YOU
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