Lecture 9- Nasal Cavity and Paranasal Sinuses Flashcards
At the tip of the nose is…. cartilage which is u-shaped and mobile
major alar
There is a …. plate of cartilage on either side of a midline septal…
- lateral
- cartilage
Bony contributions to the nasal cavity are from… and…
These form the …
- nasalis/nasal bone and frontal bone
- anterior roof
The central roof of the nasal cavity is formed by…
- ethmoid
- cribiform plate
The posterior roof of the nasal cavity is formed by…
-sphenoid
The medial wall of the nasal cavity anteriorly is made up of…
Posteriorly it is made up by…
- septal cartilage
- perpendicular plate of ethmoid bone
The posterior-inferior aspect of the medial wall of the nasal cavity is made up by the… which forms a … with the maxillary and palatine bones
- Vomer
- nasal crest
The floor of the nasal cavity is the made up of…
3/4 maxilla
1/4 palatine
The… separate the nasal cavity from nasopharynx
choanae
Superior and middle concha are components of the… bone but the inferior concha is an … bone that articulates with the…
- ethmoid
- independent
- maxilla
Above the superior nasal concha is… and below it is…
Each concha has a… below it
- spheno-ethmoidal recess
- superior meatus
- meatus
The… sinus is found in frontal bone. lateral to midline and drains via…. into infundibulum which drains into… which is a feature of the…
- frontal
- frontonasal duct
- Hiatus semilunaris
- middle meatus
The frontal sinus ultimately drains anterior to…
ethmoidal bulla
The… sinus is made up of 3 walls and appears pyramidal in coronal section
maxillary
The superior wall of the maxillary sinus separates it from the…
orbit
The medial wall of the maxillary sinus separates it from the…
nasal cavity
The lateral wall of the maxillary sinus separates it from….
infratemporal fossa
The maxillary sinus drains… because of how much of the day we spend laying down at night
superiorly
The maxillary sinus drains into the … which is located in the…
- maxillary ostium
- middle meatus
The roots of the teeth can project into… and may be covered by…
- maxillary sinus
- mucoperiosteum
What can happen during tooth extraction?
Tear membrane and create fistula
The ethmoidal air cells are located in the… and are continuous with the nasal mucosa and drain into the nasal cavity
lateral labryinths
The… duct is also found in the lateral labryinths of the ethmoid bone anteriorly
frontonasal
The… is going to contain the frontonasal canal as well as openings for anterior ethmoidal cells
semilunaris hiatus
Middle ethmoidal air cells open into the….
bulla
Posterior ethmoidal air cells open into the…
superior meatus (cant see in lab)
The sella turcica is located in the…
middle cranial fossa
The sphenoidal sinus is between nasal cavity and….
pituitary gland (anterior/middle cranial fossa)
The sphenoid sinus opens into … sinus which is superior in the nasal cavity
spehnoethmoidal recess
What are puncta
raised points of opening (openings of lacrimal canaliculi)
Nasal Cavity: What is the arterial supply of the upper anterior septum and lateral wall?
Anterior ethmoidal branches (which are from opthalmic)
Nasal Cavity: What is the arterial supply of the upper posterior septum and lateral wall?
Posterior ethmoidal branches (which are from opthalmic)
Nasal Cavity: What is the arterial supply of the lower septum and lateral wall?
Sphenopalatine branches
The nasal cavity arteries anastomose at the… which is a significant area for nosebleeds
kissil box
The anterior ethmoidal artery of the lateral nasal wall is going to give off a branch called… which is going to supply the tip of the nose
external nasal artery
The sphenopalatine artery is a major supply for the nasal cavity (a terminal branch of….) and gives off posterior nasal lateral branches and posterior septal branches of sphenopalatine
maxillary
The greater palatine artery supplies the…
septum
What are the facial artery contributions of the nasal cavity?
alar branch of lateral nasal artery and septal branch from nasal artery from superior labial artery
Venous drainage of nasal cavity… (3)
superior ophtalmic v
pterygoid plexus
facial vein
The superior 1/3 of the nasal cavity is … epithelium and the inferior 2/3 is… epithelium
- olfactory
- respiratory
The special sensory nerve of the nasal cavity is the… and the olfactory epithelium is located on both the… and…
- olfactory CNI
- lateral nasal wall and septum
The tip of nose is innervated by … which comes from…
- external branch of anterior ethmoidal nerve/
- nasociliary n.
The nasal cavity has innervation from…. , … and….
CNI
CNV1
CNV2
CNV1 also supplies the septum as the….branch of…
- septal
- anterior ethmoidal n.
What are the CNV2 branches that supply nasal cavity?
- Infraorbital n.
- Nasopalatine n.
- A.S. Alv. n.
- P.S.L. Nasal nn.
- P.I.L. Nasal nn.
Infraorbital nasal branches are going to travel with…. artery from facial artery
lateral nasal
Nasopalatine nerve is the predominant nerve on the… and ti will extend through the… canal to anastomose with the … nerve
- septum (medial nasal wall)
- incisive
- greater palatine nerve
Nasopalatine is not on the… nasal wall. Nasopalatine is a branch of…
- lateral
- CNV2
Branches of … provide general sensation to the paranasal sinuses
maxillary (CNV2)
… branches which are from… provide parasympathetic fibers to paranasal sinuses (travel on branches of V2)
- Greater petrosal
- CNVII
… branches, from…, provide sympathetic fibers to paranasal sinuses (travel on branches of V2)
Deep petrosal
T1
