G9 Pterygopalatine Fossa

Question 1

Hub for nn and aa supplying middle face. Associated with 7 openings.

Answer 1

Pterygopalatine Fossa

Question 2

Attached to V2 by 2 (short) pterygopalatine nerves. Receives (Vidian) n of pterygoid canal. Composed of both symp and p-symp fibers (but only p-symp fibers synapse here)

Answer 2

Pterygopalatine Ganglion (CN VII)

Question 3

Pterygopalatine Fossa 7 Openings:

Answer 3

Lateral- Pterygomaxillary Fissure
Medial- Sphenopalatine foramen
Posteriosuperior- Foramen rotundum
Anterosuperior- Inferior Orbital Fissure
Posterior- Pterygoid canal, Pharyngeal Canal
Inferior- Palatine Canal

Question 4

The Pterygoid canal connects _____ and ____ and transmits _____.

Answer 4

Foramen Lacerum
Sphenopalatine foramen

Vidian n of pterygoid canal, Pterygoid branch of maxillary a.

Question 5

The palatine canal transmits:

Answer 5

Greater and Lesser Palatine nn (CN V2) and aa.

Question 6

Pterygopalatine fossa is the terminal branching of _____ and the branching hub of _____

Answer 6

Maxillary artery

CN V2

Question 7

The terminal branches of the maxillary artery are found in the _____.

List them

Answer 7

Pterygomaxillary Fissure

Infraorbital
Sphenopalatine
Pharyngeal
Artery of Pterygoid canal
Greater Palatine
Lesser Palatine
Posterior Superior Alveolar

Question 8

Anterior Retromandibular v. joins with ____ to drain into _____

Posterior Retromandibular v joins with _____ to drain into _____

Answer 8

Facial v
IJV

Posterior Auricular
EJV

Question 9

Sphenopalatine foramen contents:

Answer 9

Sphenopalatine a

Nasopalatine n (V2)

Post. Lateral Nasal n (V2) (branches into Superior and Inferior)

Question 10

Inferior Orbital Fissure contents

Answer 10

1. Infraorbital n and aa

2. Zygomatic nn and aa

Question 11

____ fibers of the communicating branch travel with Zygomatic nerve to reach the ____

Answer 11

Parasympathetic

Lacrimal gland

Question 12

The ____ connects foramen lacerum and Sphenopalatine foramen.

What does it transmit?

Answer 12

Pterygoid Canal

Vidian n of pterygoid canal
Pterygoid br of maxillary a

Question 13

The pharyngeal canal transmits:

Answer 13

Pharyngeal n (CN V2)
Pharyngeal br of maxillary a

Question 14

The ___ runs vertically just lateral to perpendicular plate of palatine bone. Serves as inferior exit of pterygopalatine fossa.

What does it transmit?

Answer 14

Palatine Canal

1. Greater and Lesser Palatine nn (CN V2)
2. Descending palatine a.

Question 15

The greater petrosal n joins with the deep petrosal nerve to form ____ which runs to the _____ ganglion.

V2 is connected to this ganglion by _____.

Answer 15

(Vidian) Nerve of pterygoid canal

Pterygopalatine ganglion

Pterygopalatine nn.

Question 16

The pterygopalatine ganglion innervates these glands with parasympathetic innervation:

Answer 16

Lacrimal gland

Mucous glands (in nasal cavity)

Question 17

Vidian N of pterygoid canal:

1. Postganglionic symp fibers from _____ n (from ____)
2. Preganglionic p-symp fibers from ____ n (from ____)
3. Supply ____, ____, and ____ glands

Answer 17

1. Deep petrosal n
Internal Carotid Plexus
2. Greater Petrosal n
CN VII (Facial)
3. Lacrimal, nasal, palatal glands