Nasal Cavity and Paranasal Sinuses Flashcards
What is the only external cartilage of the nose that is not paired?
Septal cartilage
What type of cells are found in the nasal cavity?
Ciliated pseudostratified columnar epithelium
The posterior aperature of the opening into the nasopharynx
Choanae
Bones that make up the lateral nasal wall
Nasal Maxilla Lacrimal Ethmoid Sphenoid Palatine Inferior concha
Cartilage that makes up the lateral nasal wall
Lateral process of septal cartilage
Major alar cartilage
Minor alar cartilage
Bones that make up the medial nasal wall
Nasal Ethmoid Maxillary Palatine Vomer
Cartilage that make up the medial nasal wall
Septal cartilage
The frontal sinus drains into this
Infundibulum
This is located in the middle meatus and is the opening that the infundibulum drains
Hiatus semilunaris
Where is the ethmoidal bulla located?
Middle meatus
What is located in the ethmoidal bulla?
Middle ethmoid air cells
What are the three walls of the maxillary sinuses?
Superior: Floor of the orbit
Medial: Lateral wall of the nasal cavity
Lateral: Maxillary and zygomatic bones
What is the maxillary ostium?
Opening to middle nasal meatus from the maxillary sinus
The frontonasal duct goes from here to here
Frontal sinus to middle meatus
And extraction of a maxillary tooth may do this
Tear nasal membrane and produce a fistula between the mouth and maxillary sinus
What are the ethmoidal openings into the nasal cavities
Semilunar hiatus (anterior)
Opening of the middle ethmoidal cells
Opening of the posterior ethmoidal cells
Area where the sphenoid sinus opening is located
Sphenoethmoidal recess
Where is the sphenoethmoidal recess located?
Superior nasal meatus
What does the anterior ethmoidal a. branches supply?
Upper anterior septum
Lateral wall of nasal cavity
What does the posterior ethmoidal a. branches supply?
Upper posterior septum
Later wall of nasal cavity
These arteries supply the lower septum and lateral nasal wall
Sphenopalatine branches
Area of nasal cavity that has a lot of anastomoses and is prone to nosebleeds
Kisselbox area
The olfactory nerve is located here
Cribriform plate of the ethmoid bone
Branches of this nerve provides general sensation to the paranasal sinuses
Maxillary n.
The greater petrosal n provides this to the paranasal sinuses
Parasympathetic fibers
What provides sympathetic fibers to the paranasal sinuses?
Deep petrosal branches of T1
Artery that supplies the nasal cavity
Posterior lateral nasal branches of the sphenopalatine artery
These nerves innervate the nasal cavity
Posterior superior and inferior lateral nasal branches of the maxillary nerve
Nasopalatine nerve
