External Nose + Lat. Nasal Wall

Question 1

External nose made of ?

Answer 1

Osteocartilagenous part :

*upper 1/3rd consist of 2 bones (nasal bone and ethmoid bone )

*lower 2/3 rd consist of 3 paired + 1 unpaired cartilage

Question 2

What are Rhinophyma / potato tumour ?

Answer 2

• in long standing cases of acne rosacea
  
  • due to hypertrophy of sebaceous glands
  • Rx - Laser or cold steel excision followed by skin grafting

Question 3

Parts of internal nose ?

Answer 3

• vestibule
• nasal valve
• turbinates and meatuses asso. With lateral nasal wall

Question 4

What are Furuncles ?

Answer 4

• infection by staph aureus
• of hair follicles
• area supplied by inferior orbital nerve
• in nasal vestibule

Question 5

Opening in Inferior meatues ?

Answer 5

nasolacrimal duct opens via Hasner valve

Question 6

What is ethmoidal bulla ?

Answer 6

• largest anterior ethmoidal air cell
• uncinate process runs parallel to it occupying antero- superior and postero- inferior area
• present in middle meatus

Question 7

What is hiatus semilunaris inferior ?

Answer 7

• 2D opening b/w EB and UP is k/n as hiatus semilunaris ( inferior)
• 3D room at the end of this hiatus k/n as infundibulum
• sinuses opening are - frontal , anterior ethmoidal , maxillary

Question 8

Oesteomeatal opening / picadeli’s circle ?

Answer 8

Ethmoidal bulla + uncinate process + infundibulum together known as picadeli’s circle .

Question 9

What is lateral sinus or sinus lateralis of Grunwald ?

Answer 9

• recess above bulla k/n as suprabullar recess
• recess behind bulla k/ n as retrobullar recess
• when both recess are in continuation then known as sinus lateralis of Grunwald
• The 2 dimensional opening into this lateral recess is called hiatus semilunaris superior

Question 10

What are haller cells ?

Answer 10

• formed due to pneumatization of roof of maxillary sinus ( infra orbital wall) .

Question 11

Nerve supply of lateral wall of nose ?

Answer 11

• olfactory nerve
• anterior ethmoidal nerve
• splenopalatine nerve
• infraorbital nerve

Question 12

Blood supply of lateral wall of nose?

Answer 12

• anterior ethmoidal artery
• posterior ethmoidal artery
• splenopalatine artery
• greater palatine artery
• superior labial br. of facial artery