15.3 Nasal Cavity and Nasopharynx

Question 1

Identify the nasal septum as well as: the perpendicular place of the ethmoid, the vomer, and the septal cartilage.

Answer 1

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Question 2

Identify the sphenopalatine artery.

Describe the blood flow in this area and relevant anastomsis.

Answer 2

Internal carotid – Opthalmic – Anterior and Posterior Ethmoid aa. – Anterior septal aa

External carotid – Maxillary – Sphenopalatine – Posterior Septal and Lateral posterior nasal aa.

Anastamoses between anterior septal from Internal carotid and Posterior septal from external carotid.

Question 3

Identify the frontal sinus and the sphenoidal sinus (paranasal)

Answer 3

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Question 4

Identify and describe the vestibule and atrium

Answer 4

the spaces anterior to the inferior concha and middle meatus

Question 5

Identify the superior, middle, and inferior conchae

Answer 5

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Question 6

Identify the superior, middle, and inferior meatuses (and opening of nasolacrimal duct)

Answer 6

the spaces inferior to (under) the conchae

Question 7

Identify the ethmoid bulla within the middle meatus.

Identfy and describe the semilunar hiatus, opening of maxillary sinus, and frontonasal duct

Answer 7

the semilunar hiatus is within the middle meatus.

the opening of the maxillary sinus into the semilunar hiatus.

Question 8

Identify the sphenoethmoidal recess

Answer 8

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Question 9

Identify the pharyngeal tonsil, torus tubaris, opening of pharyngotympanic tube, and salpingopharyngeal fold.

Answer 9

-

Question 10

Identify the salpingopharyngeus muscle underneath its corresponding fold. Describe its innervation and function

Answer 10

• Innervated by Vagus nerve.

- Fxn: Helps elevate pharynx. Pulls on torus tubaris to help pressure equalize middle ear.