Unit 4 - Head and Neck: Pterygopalatine Fossa (Ex. III) Flashcards Preview

Gross Anatomy '15 Ex. III > Unit 4 - Head and Neck: Pterygopalatine Fossa (Ex. III) > Flashcards

Flashcards in Unit 4 - Head and Neck: Pterygopalatine Fossa (Ex. III) Deck (14)
Loading flashcards...
1
Q

What is it?

A

distribution center for branches of maxillary division of trigeminal n. (CN V2) and branches of maxillary a.

2
Q

S boundary

A

apex of orbit

3
Q

A boundary

A

maxillary sinus

4
Q

P

A

L pterygoid plate of sphenoid

5
Q

L boundary

A

pterygoaxillary fissure

6
Q

M boundary

A

vertical plate of palatine bone

7
Q

contents

A

pterygopalatine part of maxillary a., branches, and vv.
n. of pterygoid canal
pterygopalatine ganglion
maxillary division of trigeminal n. (CN V2) and branches

8
Q

With what does it communicate?

A

A –> orbit
M –> nasal cavity and palate
P –> middle cranial fossa and base of skull

9
Q

What is the pterygomaxillary fissure?

A

allows the maxillary a. to pass from the infratemporal fossa to the pterygopalatine fossa

10
Q

What do the branches of the maxillary a. supply?

A

nose
palate
pharynx

accompany branches of maxillary n. (CN V2)

11
Q

What is the nerve of the pterygoid canal?

A

enters pterygopalatine fossa from middle cranial fossa
autonomic n.
carries:
- preganglionic PARASYMP from greater petrosal n. (branch of facial n. (CN VII))
- postganglionic SYMP from deep petrosal n. (arises from internal carotid plexus)

12
Q

pterygopalatine ganglion

A

receives general sensory fibers from maxillary n. (CN V2) and PARASYMP and SYMP fibers from n. of pterygoid canal
PARASYMP fibers synapse in ganglion - general sensory and SYMP fibers pass through ganglion but do not synapse

13
Q

maxillary division (CN V2) of trigeminal n. (CN VII)

A

from middle cranial fossa –> pterygopalatine fossa via FORAMEN ROTUNDUM
suspends pterygopalatine ganglion via 2 small ganglionic nn. - transmit general sensory fibers of maxillary n.
distributes postganglionic PARASYMP (secretomotor) and SYMP (vasoconstrictive) fibers to lacrimal, nasal, palatial, and pharyngeal glands
distributes general sensory fibers to midface, maxillary sinus, maxillary teeth, nasal cavity, palate, and S pharynx

14
Q

location

A

M to infratemporal fossa

Decks in Gross Anatomy '15 Ex. III Class (89):