Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

ANT 1001 Lecture > Palet- Pterygopaletine Fossa > Flashcards

Palet- Pterygopaletine Fossa Flashcards

(66 cards)

Start Studying
1
Q

Explain th Pterygopaletine fossa
(sphenopaletine)

A
  • Inverted pyramidal shape
  • Fat filled
  • On lateral side of skulll
  • Between infratemporal fossa & Nasopharynx
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Known as major Neurovascular Crossroadsbetween the orbit – nasal cavity – the infratemporal fossa and the cranial fossa

A

PP fossa!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the anterior wall of the PP fossa?

A

Posterior surface of the maxilla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the medial wall of the PP fossa?

A

Lateral surface of the paletine bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What makes the roof/posterior wall of the PP fossa?

A
  • Sphenoid (anterosuperior surface of pterygoid process)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The PP fossa communitcates with what 6 things?

A
  1. Middle cranial fossa
  2. Infratemporal fossa
  3. Floor of the orbit
  4. Lateral wall of the nasal cavity
  5. Oropharynx
  6. Roof of the oral cavity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The PP fossa is a major site for what?

A

Maxillary Nerve (CN5V2) sensory!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The PP fosa is a terminal site for what?

A

Maxillary artery!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What important ganglion is in the PP fossa?

A

Pterygopaletine ganglion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What merges in the PP gnaglion?

A

Merger
* Pre-ganglionc sympathetic fibers from Facial CN7
* Post ganglionic PARAsympathetic fibers
**These join sympathetic fibers from T1 joing branches of V2; sensory **

Oral Facial Pain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The PP fossa is formed by the ?

A

anterosuperior surface of pterygoid process
on the sphenoid bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the 3 foramen in the spehnoid bone?

A
  1. Foramen Rotundum (max V2)
  2. Anterior opening of Pterygoid canal
  3. Foramen Lacerum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How many gateways are in the PP fossa? What do they do?

A

7 formanina & Fissure
1. Foramen rotundum
2. Pterygoind canal
3. Paltovaginal canal
4. Paletine Canal
5. Ptergomaxillary fissure
6. Inferior orbital fissure
7. PP foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What exits via formaen rotundum?

A

Maxillary CN5V2 (sensory)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Explain where the maxillary nerve goes once it exits the foramen rotundum

A
  • Passes anteriorly through inferior orbital fissure to become the infra-orbital nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Trauma to the infraorbital area results in?

A

Losing sensory, also a source of pain!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What does the infra-orbital nerve (branch from V2) supply?

A

Supplys orbital wall; sphenoidal & ethmoidal sinus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

If you have excess mucous in the sphenoidal and ethmoidal sinus, what can this causes?

A

Pressure on the infra-orbital nerve which sends sensory signals back and give us that pain pressure sensation. Sinus pressure!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What exits via the paletine canal?

A

greater & lesser paletine nerves
* Branches off V2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What does the greater paletine nerve innervate?

Branch off V2

A
  • Roof oral cavity
  • Muscosa
  • Glands of hard pallte
  • Lingual Gingiva of incisors
  • give rise to post. nasal nerves of nose
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What does the lesser palentine innervate?

branch off V2

A

soft pallate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Where is the greater paletine formaen?

A

Posterior, bilaterally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What does through the sphenopaletine foramen?

A
  • 7 Nasal nerves to nasal cavity
    most go to supply the lateral, some medial wall

branch of V2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

WHere does the Nasopaletine n go and exit into the oral cavity?

1/7 nasal nerve brances of V2

A
  • Down nasal septum into oral cavity via incisive foramen adj to incisors.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What goes through the **Palatovaginal Canal?**
Chains from below.
26
Explain **zygomatic nerve** | Branch off V2
**Branch off V2** * Supplies mucosa & glands of nasopharynx * Divides into zygomatico- temporal & facial
27
Explain the **zygomaticotemporal** branch of zygomatic n
Goes up and supplies skin over temple
28
Explain the **zygomaticofacial** branch of zygomatic n
Supply adjacent skin of zygomatic bone
29
What stems from the **Pterygopaletine fisure?** | (infratemporal fossa)
**Posterior Superior Alveolar Nerve** | branch off V2
30
What does the **Posterior Superior Alveolar nerve do & supply**? | branch off V2
* Joings with superior dental plexus inferior to max sinus * Supplies innervation to: 1. molar teeth 2. buccal gingiva 3. max sinus
30
What goes through the inferior orbital fissure?
Inferior orbital nerve | Continuation of V2
31
Explain the infra-orbital n. Location and branches
* lies in **infra-orbital groove,** exit via infraorbital canal * Branches are **middle & anterior superior alveolar nerves**
32
What do the middle & anterior superior branches off the infra-orbital canal do?
join superior alveolar plexus **supplies maxillary teeth**
33
# Infra-orbital nerve What does the **middle superior alveolar** nerve supply?
Maxiillary sinus
34
What does the **anterior superior alveolar** nerve supply?
Small **nasal branch into nasal floor & walls**
35
What branchesdoes the end of the **infra-orbital nerve** divide into? (3). Supply what?
1. Nasal (skin over nose + nasal septum) 2. Palpebral (lower skin of eyelids) 3. Superior labial (cheek, upper lip, oral mucosa)
36
What innervates the maxillary teeth?
* **Post** superior alveolar (branch off V2) * **Anterior & middle** superior alveolar (branch off infraorbital)
37
What provides blood supply to maxillary teeth?
**3 Branches off Maxillary Artery** 1. Posterior 2. Middle 3. Anterior **Alveolar arteries**
38
What innervates mandibular teeth?
Inferior alveolar nerve (V3 branch, sensory + motor)
39
What is blood supply of the mandibular teeth?
**Inferior alveolar artery** off maxillary artery
40
What is located in the pterygoid canal?
**Nerve to the pterygoid Canal** Formed by Joining of: * *greater petrossa* (branch from CN7) * *deep petrosal *(branch from internal carotid plexus) **pre ganglionic para sympathetic** & **post ganglion sympathtic fibers**
41
Explain the Greater Petrossal nerve
**Branch from CN7** * Pre-ganglionic Parasympathetic innervation * Joins with deep petrosal to form nerve to pterygoid canal
42
What does the **parasympathetic innervation** of the **greater petrosal nerve** go?
* mucous glands of nasal cavity * salivary glands in upper half of oral cavity * lacrimal gland in orbit * taste from soft palate
43
Explain the Deep Petrossal nerve
Brnach from **internal carotid plexus** * Post-ganglionic sympathetic fibers for blood vessles * Joins with Greater petrosal to form to pterygoid canal
44
Where does the deep petrosal nerve orignate from?
**Superior cervical sympathetic ganglion** that gives off the **internal carotid plexus then deep petrosal **
45
Explain **Pterygopaletine Ganglion** (PP ganglion)
* Largest of **4 parasympathetic ganglion in head** * Merging of nerve fibers CN7 and V2 * Located directly back though nose
46
What are the 3 branches off of the PP ganglion continued off V2?
1. Orbital Branch 2. Nasopaletine Branch 3. Pharyngeal branch
47
What does a pterygopalatine ganglion block do?
Helps **manage oral facial pain & headache**. * Block using a sphenocath through nose allows for direct injection into the nose.
48
How do you **Relieves trigeminal autonomic cephalalgias** such as * cluster headache * migraine * chronic paroxysmal hemicrania (CPH) * certain neuralgias
Pterygopaletin ganglion block via injection of anesthetic!
49
What does the PP ganglion contain (3 types of nerve fibers)
1. Parasympathetic 2. Sympathetic 3. Somatosensory **Help block sinus related pain & superfical nerve pain**
50
What innervates the lacrimal gland?
* Zygomaticotemporal; autonomic nerve * General sensory branch off opthalmic Nerve V1
51
Explain maxillary artery and 6 branches
**primary arterial distribution from ECA** 1. Post Sup Alveolar 2. Greater paletine 3. Infra-orbital 4. Pharyngeal 5. Artery of pterygoid canal 6. Spheno paletine artery
52
# Maxillary artery branch supplies blood **molars / premolars** – **adjacent gingivae and maxillary sinus**
Posterior Superior Alveolar Artery
53
# Maxillary artery branch Supplies blood to **structures around the orbital floor**
Infra-orbital artery
54
# Maxillary artery branch Supplies **blood to incisors canines and maxillary sinus**
Anterior Superior Alveolar Artery
55
# Maxillary artery branch Through **palatine canal** becomes lesser palatine branch: supplies: * **soft palate** – continues to greater palatine foramen to supply hard palate – to a**nterior septum of nose**
Greater Paletine Artery
56
# Maxillary artery branch **supplies blood ** * posterior aspect of roof of nasal cavity * Sphenoidal sinus * pharygotympanic tube
Pharyngeal branch
57
# Maxillary artery branch **Terminal branch of maxillary artery** Supplies: * Lateral wall of nasal cavity * Paranasal sinues (septum)
Sphenopaletine branch
58
# Maxillary Artery branch at **pterygoid canal ** * supplies surrounding tissues * fills foramen lacerum * terminates in mucosa of nasopharynx
Artery of pterygoid canal
59
All veins in the PP fossa pass ____ through PP ____ to from the ____ in the infratemporal fossa
All veins in the PP fossa pass **laterall** through **PP fissure** to from the **pterygoid plexus** in the infratemporal fossa
60
How does the **pterygoid plexus** communitcate witht the cavernous sinus?
Emmissary veins that comme off the pterygoid plexus and go up into the cavernous sinus
61
What 2 veins join befroe foing to pterygoid plexus?
Facial + Deep Facial
62
Where does the pterygoid plexus mainly drain into via what??
**External jugular** via the **retromandibular vein **
63
Where is the pterygoid plexus located
Infratemporal fossa; between temporalis m. & lateral pterygoid m.
64
Whre does the external jugular vein drain into?
Subclavian vein
65
Where does the cavernous sinus drain?
The brains dura

ANT 1001 Lecture (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions