Nose (102-109)

Question 1

What is the nerve supply to the nose?;

Answer 1

Sensory- external nasal nerve (branch of opthalmic nerve CN V1), lateral aspects of nose by infraorbital nerve (branch of maxillary nerve CN V2). Motor- nasal muscles of facial expression via facial nerve (CN VII)\

Question 2

What arteries form the Kiesselbach’s plexus?;

Answer 2

L E G S. Labial artery, Ethmoidal arteries, Greater palatine artery, Sphenopalatine (most important)

Question 3

Name the paranasal sinuses;

Answer 3

Frontal sinus, Ethmoid sinus, Maxillary sinus, Sphenoid sinus

Question 4

Into where do the paranasal sinuses drain?;

Answer 4

Superior nasal meatus-> posterior ethmoid sinus. Middle nasal meatus-> maxillary & frontal. Inferior nasal meatus -> nasolacrimal. Sphenoid ethmoid recess-> sphenoid sinus.

Question 5

Name structures that lie within the substance of the parotid gland;

Answer 5

5 branches of facial nerve (Two Zebra Bit My Coccyx), retromandibular vein, external carotid artery (deepest)

Question 6

State the course of the parotid duct and where it drains into;

Answer 6

Transveres the massester. The duct then pierces the buccinator, moving medially. It opens out into the oral cavity near the second upper molar.

Question 7

What are the boundaries of the pterygopalatine fossa?;

Answer 7

Anteriorly- maxilla. Superiorly- Greater wing of sphenoid bone. Posteriorly- lateral pterygoid plate of sphenoid bone. Laterally- ptergomaxillar fissue. Medially & inferiorly- palatine bone.

Question 8

What structures pass through the pterygopalatine fossa?;

Answer 8

Pterygopalatine gangilion, Maxillary nerve (CN V2), Maxillary artery, pterygoid venus plexus