The Nose Flashcards
Into which veins does the nasal cavities drain into?
Facial vein
Pterygoid venous plexus
Cavernous venous sinus
What is the innervation to the skin of the nose?
Bridge of nose - CN V1 ophthalmic division (infratrochlear and external nasal branch of anterior ethmoidal)
Alae - CN V2 maxillary division (nasal branches of infraorbital)
What is highlighted?
The sphenoethmoidal recess
What is the innervation of the ethmoidal sinus?
Nasocilliary nerve of CN V1
What bone is highlighted?
The vomer
What bone forms the superior and middle concha?
Ethmoid bone
What is shown in yellow?
The olfactory bulb
What is highlighted?
Maxillary sinus
What is this muscle?
Levator labii Superioris Alaeque Nasi
What is highlighted?
Superior meatus
What is the name of the cartilage which helps to form the shape of the nose?
Alar cartilage
Where are the paranasal sinuses found?
Within the frontal, maxillary, ethmoid and sphenoid bones
What is highlighted?
The frontal sinus
Can be 2 separate cavities or just one large sinus
What is highlighted?
Kiesselbach’s Plexus
True or False?
Kiesselbach’s area is found in the lateral wall of the nose
False!
Found in the medial wall where the vessels of the nose anastamose with each other
What is the innervation to the frontal sinus?
Supra-orbital nerve of CN V1
What arteries supply the nose?
Anterior and posterior ethmoidal arteries (ophthalmic)
Sphenopalatine and greater palatine (maxillary)
Septal branch - superior labial and lateral nasal (facial)
What is highlighted?
Superior concha
What bones contribute to the lateral wall of the nasal cavity?
Maxilla, Sphenoid, Ethmoid and small part of the frontal bone
What bone is highlighted?
The perpendicular plate of the ethmoid bone
What is the innervation of the maxillary sinus?
Superior alveolar of CN V2
What is the name of the cartilage associated with the midline of the nose, separating the 2 nostrils?
Septal cartilage
What is highlighted?
The sphenoid sinus
What is highlighted?
Ethmoid sinus
Forms a series of small sacs (or air cells) instead of just one space
What is highlighted in this image?
Paranasal sinuses
What is the role of the nasal conchae?
To create turbulence of the air inside the nasal cavity and warm it before it passes to the nasopharynx
What is the sensory innervation to the walls of the nasal cavity?
Trigeminal nerve - ophthalmic and maxillary divisions
What are the external openings of the nose called?
Nares or Nostrils
What lines the nasal cavity?
Respiratory epithelium - has cilia and produces mucus to trap any particles and filter the air
What is the innervation of the sphenoidal sinus?
Posterior ethmoidal of CN V1
