Anatomy of the nose Flashcards
What bone makes up the superior and middle conchae?
What bone makes up the inferior conchae?
Ethmoid bone
Own bone
During face first impact the nose is often hit first. It is not unusual for the septal cartilage to detach from the ….?
Perpendicular plate of the ethmoid bone
How does the olfactory nerve reach the nose?
Through the cribriform plate of the ethmoid bone
What is the purpose of the conchae/turbinates?
To increase turbulence of air in the nose and allow it to stay there longer
Allows longer time at receptor cells at roof of nose Wh
What are the 5 arteries that contribute to the Kiesselbach’s plexus?
State their origin and how they enter the nasal cavity
Anterior ethmoidal artery
- anterior ethmoidal foramen
- ophthalmic artery
Posterior ethmoidal artery
- posterior ethmoidal foramen
- ophthalmic artery
Greater palatine artery
- up through the incisive foramen
- maxillary artery
Sphenopalatine artery
- sphenopalatine foramen
- maxillary artery
Septal branch of the superior labial artery
- facial artery
- through the upper lip
What are the 5 arteries that contribute to the Kiesselbach’s plexus?
State their origin and how they enter the nasal cavity
Anterior ethmoidal artery
- anterior ethmoidal foramen
- ophthalmic artery
Posterior ethmoidal artery
- posterior ethmoidal foramen
- ophthalmic artery
Greater palatine artery
- up through the incisive foramen
- maxillary artery
Sphenopalatine artery
- sphenopalatine foramen
- maxillary artery
Septal branch of the superior labial artery
- facial artery
- through the upper lip
What carotid artery is the ophthalmic artery a branch of?
Internal carotid artery
What carotid artery is the maxillary artery a branch of?
External carotid artery
Describe the different epi. in the nose
Nasal vestibule - beginning part of nose
- stratified squamous epi
Main bulk
- resp epi (pseudostratified columnar epithelia with cilia)
Upper segment
- olfactory epi
Describe the toothbrush analogy of CN I.
What nerve is CN I?
Where are olfactory nerves processed?
CN I = olfactory nerve
Length of brush = olfactory tract
Bit that holds bristles = olfactory bulb
Passes through cribriform plate
Bristles = receptor cells (actual part = CN I)
Primary olfactory cortex - temporal lobe
