Nasal Cavity Flashcards
What are the 4 arteries associated with the nose?
Ophthalmic
Maxillary
Facial
Kiesselbach area
What is the kiesselbach area?
Anterior part of the septum where 5 arteries anastomise
What branches of the ophthalmic artery supply the nose?
Anterior and posterior ethmoidal
What branches of the maxillary artery supply the nose?
Sphenopalatine and greater palatine
What branches of the facial artery supply the nose?
Superior labial and lateral nasal branches
Where is the kiesselbach area?
Anterior part of septum
Name arteries A and B, what main artery are they ranches of?
A = anterior ethmoidal artery
B = posterior ethmoidal artery
Branches of the ophthalmic artery
What are arteries A-C, what artery do they arise from?
A= sphenopalatine artery
B = lateral branches of sphenopalatine artery
C = greater palatine artery
Branches of the maxillary artery
Alar branch of lateral nasal artery
From the maxillary artery
Septal branch from nasal artery from superior labial artery
Where does the kiesselbach area lie?
On the septal cartilage
What is the medical term for a nose bleed?
Epistaxis
What are the 3 forms of venous drainage of the nose?
Emissary
Sphenopalatine
Ethmoidal, branches
What is the course of the emissary veins for venous drainage of the nose?
Through foramen caecum to superior Sagittal sinus
What is the route of the sphenopalatine venous drainage system of the nose?
Through the sphenopalatine foramen to pterygoid plexus
What foramen is this and what passes through?
Foramen caecum and emissary veins pass through
Where does A and B drain to?
A = cavernous sinus
B = pterygoid plexus in infratemporal fossa
What are these veins and where are the draining to?
Emissary veins draining to the superior sagittal sinus
Where are these veins draining to?
Facial vein
What muscles is the pterygoid plexus near?
Masticatory muscles
Where can these (B) veins drain into, 2 options?
Maxillary vein or pterygoid plexus
What is the nerve for special sensation of the nose?
Olfactory nerve
What nerves allow general sensation of the nose?
Ophthalmic
Maxillary
What is olfaction?
Smell
What branch of the ophthalmic allows general sensation to the nose?
Anterior ethmoidal
What branches of the maxillary nerve allow for general sensation to the nose?
Nasopalatine
Infraorbital
Posterior lateral nasal branches of greater palatine nerve
A = olfactory bulb
B = olfactory nerve
C = olfactory nerve (septal branches)
What is the role of the olfactory bulb?
Sits on the cribreform plate and sending nerve to the top of the make, responsible for signalling
What nerve is this, what does it supply and what major nerve is it a branch of?
Nerve = anterior ethmoidal
Supplies = lateral and anterior part of cartilage
Origin = ophthalmic nerve
A = sphenopalatine foramen
B = posterior superior lateral nasal nerves
C = posterior inferior lateral nasal nerves
Nasal branch of anterior superior alveolar nerve
Where does the maxillary nerve end?
Infra-orbital nerve
Innervation to septa
A = septal branch of anterior ethmoidal nerve
B = nasopalatine nerve
A blow to the nose here, what is the nerve chain of events?
Anterior ethmoidal nerve carry sensation to the olfactory nerve
