G8 Nasal Cavity

Question 1

The frontal sinus is found within the ____ bone lateral to midline. It drains via _____ into infundibulum. From here enters middle meatus of nasal cavity along the ______, or anterior to _____

Answer 1

Frontal

Frontonasal duct

Semilunar Hiatus

Ethmoidal bulla

Question 2

The nasal cavity shares border with:

Shares neurovascular bundle branches with:

Answer 2

Oral cavity, orbit, anterior cranial fossa

Oral cavity

Question 3

____ is the space above the superior concha. ____ is the space below the superior concha.

Answer 3

Spheno-ethmoidal recess

Superior Meatus

Question 4

Maxillary Sinus Walls separate this sinus from the following:
Superior-
Medial-
Lateral-
Inferior-

Answer 4

Superior- Orbit
Medial- Nasal cavities
Lateral- Infratemporal fossa
Inferior- Oral cavity

Question 5

The maxillary sinus has an opening in the ____ area called the Maxillary Sinus Ostium

Answer 5

Middle nasal meatus

At end of semilunar hiatus

Question 6

Nasolacrimal duct drains into the _____

Answer 6

Inferior meatus

Question 7

Roots of upper teeth may project into the ____ sinus. Extraction can produce a fistula between the mouth and this sinus.

Answer 7

Maxillary

Question 8

Anterior ethmoidal cells open into the _____

Middle ethmoidal cells empty into the _____

Posterior ethmoidal cells empty into the _____

Answer 8

Semilunar Hiatus

Ethmoidal Bulla

Superior Meatus

Question 9

The Sphenoid sinus is superior to ____ and inferior to ____ and ____.
It drains into the _____ which is most superior at the roof of the nasal cavity.

Answer 9

Nasal cavity

Sella Turcica
Cranial cavity

Sphenoethmoidal recess

Question 10

Supply upper anterior septum and lateral wall with blood

Answer 10

Anterior Ethmoidal branches

Question 11

Supplies upper posterior septum and lateral wall with blood

Answer 11

Posterior Ethmoidal branches

Question 12

Supply lower septum and lateral wall with blood

Answer 12

Sphenopalatine branches

Question 13

Sphenopalatine artery is a terminal branch of _____ artery. It branches into posterior septal branch and posterior lateral nasal branches of sphenopalatine artery

Answer 13

Maxillary

Question 14

This area of the nose has significant anastomoses (5 different branches) (prone to nosebleeds)

Answer 14

Nasal Septum (Kiesselbach area)

Question 15

Supplies general sensory to anterior nose

Answer 15

Anterior ethmoidal nerve (CN V1: Nasociliary n.)

Question 16

Supplies all of the nose except anterior portion with general sensory innervation

Answer 16

CN V2 (Infraorbital n, Nasopalatine n, A. S. Alveolar n, P. S. L. Nasal nn, P. I. L. Nasal nn)

Question 17

Nerves of Paranasal Sinuses:

Answer 17

1. CN V2 branches (general sensory)
2. CN VII Greater petrosal branches (p symp fibers)
3. Deep petrosal branches (T1) (symp fibers)

All travel by CN V2 routes

Question 18

Deep petrosal nerve joins with greater petrosal nerve to form this nerve. This nerve is only autonomic… post-synaptic sympathetic (___ petrosal) and pre-synaptic parasympathetic (____ petrosal)

Answer 18

Nerve of pterygoid canal (Vidian nerve)

Deep

Greater