Anatomy and Physiology of the Nose

Question 1

whats Choanal atresia

Answer 1

Failed recanalization of the nasal fossae during foetal development

can’t breath through nose- emergency

Question 2

immunoglobulins found in nose

Answer 2

IgA
IgE

Question 3

name for bit in-between nostrils

Answer 3

collumella

Question 4

main branch that supplies artery to nose

Answer 4

facial

Question 5

artery supply to skin of external nose

Answer 5

supratrochlear
dorsal nasal
infraorbital artery.

Question 6

blood supply to septum and alar cartilages

Answer 6

angular artery
lateral nasal artery

Question 7

venous drainage of external nose

Answer 7

facial vein

Question 8

Sensory innervation of external nose

Answer 8

branches of trigeminal nerve (CN V)

Question 9

Motor innervation to the nasal muscles

Answer 9

facial nerve (CN VII).

Question 10

artery supply to internal nose comes from

Answer 10

internal and external carotids

Question 11

common ant and post sites of bleeding

treatments

Answer 11

Ant- Little’s area on anterior septum
cauterisation

Post- Woodruff plexus
packing

Question 12

drainage of frontal sinus

Answer 12

to frontonasal duct
into hiatus semilunaris, within the middle
meatus of the nasal

Question 13

nerve and artery supply to frontal sinus

Answer 13

supraorbital nerve (branch of the ophthalmic nerve)

Arterial supply via anterior ethmoidal
artery (a branch of the internal carotid)

Question 14

drainage of sphenoid sinus

Answer 14

to spheno-ethmoidal recess,
supero-posterior to the superior
turbinate.

Question 15

nerve and artery supply to sphenoid sinus

Answer 15

posterior ethmoidal nerve (a branch of the ophthalmic nerve)

sphenopalatine (branch of maxillary)
and posterior ethmoidal artery (ICA)

Question 16

drainage of maxillary sinus

Answer 16

hiatus semilunaris,
underneath the frontal sinus opening

Question 17

nerve and artery supply to maxillary sinus

Answer 17

superior alveolar nerves and greater palatine nerve (branches of maxillary nerve)

branches of facial and maxillary arteries

Question 18

drainage of ethmoid air sinuses

Answer 18

• Anterior – Opens into the hiatus
  semilunaris (middle meatus) via ethmoid
  bulla
• Posterior – Opens into the lateral wall of
  the superior meatus

Question 19

nerve and artery supply to ethmoid sinuses

Answer 19

anterior and posterior ethmoidal branches of the nasociliary nerve (from ophthalmic nerve)

and the maxillary nerve.

anterior and posterior ethmoidal arteries