Blood Supply, Venous Drainage and Sensory Innervation of the Nasal Cavity Flashcards
1
Q
Which arteries supply the nasal cavity?
A
- Anterior and posterior ethmoidal arteries
- Sphenopalatine artery
- Greater palatine artery
- Superior labial artery
2
Q
From what arteries do the anterior and posterior ethmoidal arteries branch?
A
- Ethmoidal arteries branch off of ophthalmic artery
- Ophthalmic artery branches off internal carotid artery
3
Q
From what arteries does the sphenopalatine artery branch?
A
- Sphenopalatine artery branches off maxillary artery
- Maxillary artery branches off external carotid artery
4
Q
From what arteries does the greater palatine artery branch?
A
- Greater palatine artery branches off maxillary artery
- Maxillary artery branches off external carotid artery
5
Q
From what arteries does the superior labial artery branch?
A
- Superior labial artery branches off facial artery
- Facial artery branches off external carotid artery
6
Q
What is Kiesselbach’s area?
A
Area of the nasal septum rich in anastomosing arteries
7
Q
Venous drainage of the nasal cavity (anterior, superior and posterior)
A
- A = facial vein
- S = cavernous sinus
- P = pterygoid venous plexus
8
Q
How does venous drainage of the nasal cavity create an opportunity for infection to spread?
A
- Veins carry blood from nasal cavity deeper into head
- Pathogens have easy access to nasal cavity and can be taken in blood towards brain itself
9
Q
Which nerve carries general sensation of the nasal cavity?
A
Trigeminal nerve (CNV)
10
Q
Which divisions of the trigeminal are responsible for which portions of the nasal cavity?
A
- Ophthalmic division (CNV1) = anterior and superior part
- Maxillary division (CNV2) = posterior and inferior part
