External nose is formed from:
3 paired+ 1 unpaired cailages External nose is made up of bony framwork which forms upper third pa and cailaginous forms lower two-third pa framwork. cailages of nose: -paired upper lateral nasal cailages -paired lower nasal cailages -lesser alar cailages-2 or more in number -unpaired septal cailage. Ref.Dhingra 5/e, p 149,150;6/e,p 134.
3 paired+3 unpaired cailages
3 paired + 1 unpaired cailages
3 paired +4 unpaired
1 paired+1 unpaired
Nose and paranasal sinuses