Nasal Cavity and Paranasal Sinuses

Question 1

Name the opening behind all the conchae into the nasopharynx

Answer 1

Choana

Question 2

What is the name of the space above the superior nasal conchae?

Answer 2

Sphenoethmoidal Recess

Question 3

What drains the frontal sinus to the nasal cavity?

Answer 3

Frontonasal duct to the infundibulum within the semilunar hiatus

Question 4

Pathway of tears

Answer 4

Lacrimal gland –> canaliculi –> sac –> duct –> inferior meatus

Question 5

What arteries supply the upper anterior septum and the lateral wall?

Answer 5

Anterior ethmoidal brs –(septal/lateral nasal brs)

Question 6

What arteries supply the upper posterior septum and lateral wall?

Answer 6

Posterior ethmoidal brs. –(septal/lateral nasal branches)

Question 7

What arteries supply the lower septum and lateral wall of the nasal cavity?

Answer 7

Sphenopalatine brs. –(posterior lateral nasal branches & posterior septal)

Question 8

What is the “path” of smells

Answer 8

Nervefilaments–pass thru cribriform plates • Olfactorybulbs–receive filaments •
Olfactorytracts–pass posterior to olfactory cortex

Question 9

Name the parasympathetic cell body origin

Answer 9

Craniosacral

Question 10

What is the sympathetic cell body of origin?

Answer 10

Cervicothoracic

Question 11

Describe the parasympathetic pathway to the nose

Answer 11

CN VII –> Geniculate ganglion –> Greater petrosal nerve –> pterygoid canal –> vidian –> pterygopalatine ganglion –> nasal, lacrimal, palatal glands

Question 12

Describe the sympathetic pathway to the nose

Answer 12

T1/T2 –> superior cervical ganglion –> internal carotid plexus –> deep petrosal n –> vidian n –> through pterygopalatine ganglion –> nasal arterioles and sinusoids

Question 13

Describe the general sensory innervation in the nose

Answer 13

Brs. of nasociliary n. (CN V1) – supply some of nasal cavity
• Brs. of maxillary n. (CN V2) – supply most of nasal cavity
• Supply both septum & lateral wall
• Brs. pass thru pterygopalatine ganglion, but do not synapse

Question 14

What are the various nerves of the paranasal sinuses (what are they branches of and what type of fibers, too)…what do they travel on??

Answer 14

Brs. of maxillary (CN V2) – provide general sensation
• Greater petrosal brs. (CN VII) – provide p- symp. fibers
• Deep petrosal brs. (T1-T2) – provide symp. fibers
• All travel to sinuses on brs. Of CN V2