Trigeminal Nerve - Maxillary Division

Question 1

The maxillary enters what area?

Answer 1

The pterygopalatine fossa

Question 2

The maxillary enters the pterygopalatine fosse through what structure?

Answer 2

The foreman rotundum (or round foreman)

Question 3

What type of information does the maxillary division have?

Answer 3

Sensory ONLY

Question 4

The maxillary division carries information from which areas of the skin?

Answer 4

Skin between the eyes and mouth, over the cheeks and temples.

Question 5

The maxillary division also carries information from which mucosal areas?

Answer 5

Mucosal lining the maxillary sinuses, nasal conchae, palate, and gingiva (of upper teeth).

Question 6

What are the four branches of the maxillary division?

Answer 6

Middle meningeal nerve
zygomatic
2-3 ganglionic branches
infraorbital nerve

Question 7

When is the middle meningeal nerve given off?

Answer 7

Before maxillary division exits the foramen rotundum.

Question 8

What does the middle meningeal nerve supply?

Answer 8

The meninges of the middle cranial fossa.

Question 9

How does the zygomatic nerve enter the orbit?

Answer 9

Through the inferior orbital fissure.

Question 10

The zygomatic nerve gives rise to three branches.

Answer 10

A communicating branch
Zygomaticotemportal nerve
zygomaticofacial nerve

Question 11

The communicating branch of the zygomatic nerve carries what kind of fibers?

Answer 11

Postganglionic parasympathetic fibers.

Question 12

The postganglionic parasympathetic fibers of the communicating branch of the zygomatic nerve are from which structure? Where are they traveling to?

Answer 12

The pterygopalatine ganglion,

To the lacrimal gland

Question 13

The zygomaticotemportal nerve supplies what?

Answer 13

Skin over the temple

Question 14

The zygomaticofacial nerve supplies what area?

Answer 14

Skin over the cheek.

Question 15

The 2-3 ganglionic branches carry sensory information from what areas?

Answer 15

The upper pharynx, nasal cavity, and palate.

Question 16

The 2-3 ganglionic branches carries their information through what structure to the maxillary division?

Answer 16

The pterygopalatine ganglion

Question 17

The infraorbital nerve travels through which two areas?

Answer 17

The infraorbital fissure and infraorbital canal

Question 18

What happens to the infraorbital nerve before it enters the infraorbital canal?

Answer 18

Gives off three branches: posterior, middle, and anterior superior alveolar nerves.

Question 19

These three superior alveolar nerves supply which areas?

Answer 19

Posterior - molars
Middle - premolars
Anterior - incisors
(upper teeth)

Question 20

The infraorbital nerve supplies which areas? (3)

Answer 20

Lower eyelid
Skin over upper jaw
Maxillary sinus

Question 21

Branches of the maxillary division of the trigeminal nerve (sensory) are used to distribute what type of fibers from the pterygopalatine ganglion?

Answer 21

Postganglionic parasympathetic fibers.

Question 22

These postganglionic parasympathetic fibers from the maxillary division are traveling to which area?

Answer 22

The lacrimal gland

Question 23

What other types of fibers are going to and from and passing through this pterygopalatine ganglion and where do they come from?

Answer 23

1) preganglionic parasympathetic fibers from the facial nerve via the greater perusal nerve
2) postganglionic sympathetic fibers from superior cervical ganglion
3) sensory fibers pass through to CNS