anatomy of nose
TRANSCRIPT
ANATOMY OF NOSE
pgmedicalworld.com
PARTS OF NOSE
pgmedicalworld.com
External nose:
• Osteocartilagenous framework•bony part•cartilaginous part
• Nasal musculature
• Nasal skinpgmedicalworld.com
OSTEOCARTILAGINOUS FRAMEWORK
pgmedicalworld.com
Internal nose:
• Vestibule of nose
• Nasal cavity proper• Lateral wall• Medial wall• Roof• Floor• Choanae
pgmedicalworld.com
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.
pgmedicalworld.com
Lateral wall
pgmedicalworld.com
Structures on lateral wall of nose
pgmedicalworld.com
Medial wall• Columellar septum
• Membranous septum
• Septum proper
pgmedicalworld.com
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
pgmedicalworld.com
Arterial supply
pgmedicalworld.com
Venous drainage
pgmedicalworld.com
Nerve supply
pgmedicalworld.com
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
pgmedicalworld.com
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.
pgmedicalworld.com
THANK YOU
pgmedicalworld.com