Nose And Pns-anatomy & Physio Of Pns Flashcards
Speed of nasal cilia
10-20 beats per sec
Nasociliary clearance time
10-20 minutes
Maxillary sinus aka
Antrum of highmore
Largest sinus and its volume
Maxillary sinus
15 ml
MC sinusitis is adults (which sinus)
Maxillary sinus
First sinus to appear in embryological life
Maxillary sinus
Last sinus to appear in humans
Frontal sinus
First radiological evidence of frontal sinus seen at what age
6 yrs
Most asymmetric pair of sinus
Frontal sinus
Radiological evidence of sphenoid sinus (what age)
4 yrs
Sphenoid sinusitis complications
Cavernous sinus thrombosis
Damage of-
Optic nerve
ICA
Patterns of pneumatisation of sphenoid sinus (pituitary adenoma)
Conchal
Presellar
Sellar/post-stellar
MC type of pneumatisation of sphenoid sinus (pituitary adenoma)
Sellar/post-sellar
Best surgical approach of pituitary adenoma
Transnasal transsphenoidal approach
No. Of anterior ethmoid cells
Constant cells
2-8
No. Of posterior ethmoidalis air cell
1-8
Most constant and largest ethmoidal air cell
Bulla ethmoidalis
Anterior most anterior ethmoid air cell
Agger nasi
Most developed sinus at birth
Ethmoid sinus
MC sinusitis in CHILDREN
Ethmoid sinusitis
Sequence of appearance of sinuses
MESF Maxillary Ethmoid Sphenoid Frontal
Which sinus attains adult size last
Sphenoid sinus
Ethmoid cell in unusual location - orbital floor called
Haller cell
Ethmoid cell at unusual location - close to optic nerve called
Onodi cell
Ethmoid cell at unusual location - inside middle turbinate
Concha bullosa (MC variation)
Anterior and posterior division of ethmoid by which structure
Basal lamina
Most posterior cell of the posterior group of ethmoid cells is
Onodi cells
Nasolacrimal ducts drains into ?
Inferior meatus
Structures that drain into middle meatus
Maxillary sinus
Frontal sinus
Anterior ethmoid air cells
Posterior ethmoidal air cells drain into
Superior meatus
Sphenoid sinus drains into
Superior ethmoidal recess
Where is the surgical opening of dacrocystorhinostomy
Middle meatus
