4.3 Nasal Cavity and Pterygopalatine Fossa Flashcards Preview

Gross Anatomy > 4.3 Nasal Cavity and Pterygopalatine Fossa > Flashcards

Flashcards in 4.3 Nasal Cavity and Pterygopalatine Fossa Deck (63)
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1

What empties into the inferior meatus?

nasolacrimal duct, channeling tears from the conjunctival sac

2

What empties into the hiatus semilunaris of the middle meatus?

frontal sinus via the frontonasal duct, maxillary sinus, and anterior ethmoidal air cells

3

What empties onto the surface of the ethmoidal bulla in the middle meatus?

middle ethmoidal air cells

4

What empties into the superior meatus?

posterior group of ethmoidal air cells

5

What drains into the sphenoethmoidal recess (above the superior concha)?

sphenoidal sinus

6

What innervates the anterior and upper regions of the lateral and medial walls of the nasal cavity?

general sensation from branches of the anterior ethmoidal n. (V1)

7

What innervates the lower and posterior portions of the walls of the nasal cavity?

maxillary n via branches from the pterygopalatine ganglion

8

The pterygopalatine ganglion hangs behind the ....

spheno-palatine foramen

9

What foramen does the nasopalatine n pass through?

incisive foramen

10

What supplies a portion of the mucosa lining the hard palate?

nasopalatine n. (V2)

11

The skin of the vestibule is supplied by a branch from the ...

infraorbital n. (V2)

12

Anterior and posterior ethmoidal aa. are branches from what artery?

ophthalmic a.

13

What a. is a direct continuation of the maxillary a. after it leaves IFT?

sphenopalatine a.

14

Rupture of what branches commonly give rise to nosebleeds?

labial a. branches

15

What travels through the pterygopalatine fossa?

3rd segment of maxillary a., maxillary n., and autonomic nerve fibers (parasympathetics from CN VII, as well as sympathetics)

16

What are the anterior boundaries of the pterygopalatine fossa?

maxilla and maxillary sinus

17

What are the posterior boundaries of the pterygopalatine fossa?

pterygoid process of sphenoid, cranial cavity (foramen rotundum), nasopharynx (pharyngeal canal)

18

What are the lateral boundaries of the pterygopalatine fossa?

IFT (pterygomaxillary fissure)

19

What are the medial boundaries of the pterygopalatine fossa?

perpendicular plate of the palatine bone (sphenopalatine foramen), and nasal cavity

20

What are the superior boundaries of the pterygopalatine fossa?

greater wing of sphenoid bone (inferior orbital fissure)

21

What are the inferior boundaries of the pterygopalatine fossa?

pyramidal process of palatine bone, palate/oral cavity (palatine canal, and greater and lesser palatine foramina)

22

Where does CN V2 travel after exiting the cranial vault via foramen rotundum?

enters pterygopalatine fossa and gives off several branches

23

What does the greater palatine n. innervate?

palatal mucosa and palatal (lingual) gingiva posterior to the maxillary canines

24

What does the lesser palatine n. innervate?

mucous membranes and glands of soft palate, uvula and palatine tonsil

25

What does the nasopalatine n. (long sphenopalatine n.) innervate?

nasal septum and palatal mucosa anterior to the maxillary canines

26

What does the posterolateral nasal branches (short sphenopalatine n.) innervate?

mucous membrane of the lateral wall of the nasal cavity

27

What does the pharyngeal branches innervate?

mucous membranes of sphenoidal sinus and nasopharynx

28

The zygomatic n. passes through the lateral wall of the orbit and communicates with the ...

lacrimal n. CN V1

29

What type of fibers from the pterygopalatine ganglion travel with the zygomatic n. to reach the lacrimal gland?

postganglionic parasympathetic fibers

30

What does the zygomaticofacial n. give sensory innervation to?

prominence of the cheek