Week 2 WET Flashcards
With which bone do the nasal bones articulate superiorly with at the nasion?
Frontal
What bone articulates with the nasal bones laterally?
Frontal process of maxilla
What forms the floor of the nasal cavity?
Hard palate
1) Maxilla
2) Palatine bones
The nasal septum divides the nose into 2 halves. What 2 bones form the nasal septum?
Perpendicular plate of ethmoid bone
Vomer
What structure lies anterior to these two bones to complete the nasal septum?
Septal cartilage
Regarding the ethmoid bone, what passes through the cribiform plate?
Olfactory nerves
What attaches to the crista gali of the ethmoid bone?
Falx cerebri (dura mater)
What kind of epithelium forms the respiratory mucosa which lines most of the nasal cavity?
Ciliated ‘pseudostratified’ columnar epithelium with goblet cells
Which bone forms the roof of the nasal cavity?
Cribiform plate of ethmoid bone
Which cranial nerve is responsible for the sense of smell?
Olfactory nerve
What do axons of the olfactory nerve pass through to reach the cranial cavity from the nasal cavity?
Cribiform plate
The lateral wall of the nasal cavity has three projections called ……………….
Turbinates (concha)
The superior and middle turbinates (conchae) are part of which bone?
Ethmoid
The inferior conchae is its own bone.
True or False.
True
What name is given to the space above the superior concha?
Spheno-ethmoidal recess
What are para-nasal sinuses?
Air-filled spaces within some skull bones
Name 2 functions of the para-nasal sinuses
Decrease weight of skull
Reservoir of warm, humid air
Humidify insipired air
Respiratory muscosa of the nasal cavity is continous into the sinuses. What is the clinical significance of this?
Infection can spread from nose into the sinuses leading to sinusitis.
What opens into the spheno-ethmoid recess?
Sphenoid sinus
What opens into the superior meatus?
Posterior ethmoid air cells
List 4 things that open into the middle meatus?
Frontal sinuses
Maxillary sinuses
Middle ethmoid air cells
Anterior ethmoid air cells
What opens into the inferior meatus?
Naso-lacrimal duct
Name the air sinus whose floor is often indented by tooth sockets?
Maxillary sinus
What branch of Cr. N V innervate the frontal sinus?
V1 - opthalmic
What branch of Cr. N V innervate the maxillary sinus?
V2- maxillary
What branch of Cr. N V innervate the sphenoid sinus?
V1 + V2
What branch of Cr. N V innervate the ethmoidal air cells?
V1
State the 3 parts of the pharynx
Nasopharynx
Oropharynx
Hypopharynx (laryngopharynx)
Which bones forms the roof of the nasopharynx?
Sphenoid
(& Basilar part of occipital)
Name the 2 important structures present in the nasopharynx.
Nasopharyngeal tonsil (adenoid) aka pharyngeal
salpingopharyngeus
