Nasal Canal Flashcards
What are the two major cartilages that for the outside of the nose?
Major alar cartilage
Septal cartilage
Supporting framework of the nose consists of what?
Bone
Hyaline cartilage
What are the two divisions of the major alar cartilage of the nose ?
Lateral crura
Medial crura
What is the area lines with skin and stiff hairs in the nose?
Vestibule
What does the nose communicate with posteriorly?
Nasopharynx
What are the three main functions of the nasal cavity?
Smell
Conditioning the air
Receive secretions from nasolacrimal duct and air sinuses
What bones make up the floor of the nasal cavity?
Hard palate
What bones make up the roof of the nasal cavity?
Nasal bone
Frontal bone
Cribiform plate of the ethmoid
Sphenoid
What bones make up the medial wall of the nasal cavity (aka nasal septum)?
Perpendicular plate of the ethmoid
Vomer
What bones make up the lateral wall of the nasal cavity?
Maxilla lacrimal bone Inferior nasal concha Ethmoidal labyrinth Palantine Medial pterygoid plate
Where is the sphenoethmoidal recess?
Above and behind the superior nasal concha
What opening is found in the superior meatus?
Opening for the posterior ethmoidal air cells
What four things can be found in the middle meatus?
Semilunar hiatus
Infundibulum
Ethmoidal bulla
Opening of maxillary sinus
What opening is in the ethmoidal bulla?
Opening for Middle ethmoidal air cells
What openings can be found in the infundibulum?
Opening for anterior ethmoidal air cells
Possibly frontal sinus
What opening is in the inferior meatus?
Nasolacrimal duct
What opening is in the sphenoethmoidal recess?
Opening of the Sphenoid sinus
What are the two types of mucosa found in the nasal cavity?
Olfactory mucosa (has olfactory cells) Respiratory mucosa
What three nerves supply general sensory innervation to the nose?
Opthalmic v1
maxillary v2
Anterior ethmoidal nerve
The anterior ethmoidal nerve (branch of the nasociliary) divides into what two branches in the nasal cavity and what do they supply?
Internal: mucosa of anterior septum and lateral wall
External: skin of lower part of nose
What are the cells that provide special sensory nerve supply to the nose?
Olfactory receptor cells
What part of the olfactory cell gives rise to no motile cilia?
Dendrite
What part of the olfactory cell gives rise to olfactory nerves?
Axons
What are the main two arteries that supply the nasal cavity?
Sphenopalantine (maxillary) Anterior ethmoidal (opthalmic)
What does the Sphenopalantine artery supply in the nasal septum?
Posterior part of lateral wall and septum
What does the anterior ethmoidal artery supply in the nasal cavity?
Anterior parts of the nasal cavity and septum
What is the common area for a nosebleed?
Kiesselbach’s area
Where arteries of the nasal septum anastomose
What are the main veins of the nasal cavity?
Pterygoid venous plexus
Facial vein
Superior opthalmic vein
What are the functions of the para nasal sinuses?
Resonating chambers for voice
Lighten skull bones
What bone is the maxillary sinus in?
Maxilla
What is the nerve supply of the maxillary sinus?
Superior alveolar nerve
What is the blood supply of the maxillary sinus?
Superior alveolar artery
What is the nerve supply of the frontal sinus?
Supraorbital nerve
What is the artery supply of the frontal supply?
Supraorbital artery
What is the nerve supply of the ethmoid air cells?
Anterior and posterior ethmoidal nerves
What is the arterial supply of the ethmoidal air cells?
Anterior and posterior ethmoidal arteries
What is the nerve supply of the sphenoid bone?
Posterior ethmoidal nerve
Pharyngeal nerve
What is the arterial supply of the sphenoid sinus?
Posterior ethmoidal artery
Pharyngeal branch of maxillary artery
