Trigeminal nerve (dave's notes)

Question 1

What does the trigeminal nerve (V) supply to the face?

Answer 1

Sensory and proprioceptive supply to the face

Question 2

Describe the general distribution of the branches of the trigeminal nerve.

Answer 2

Three branches supply skin with the zones meeting at the corner of the eyes and mouth. These are sensory and proprioceptive. Each branch has 5,3,3, branches

Question 3

Name the branches of the trigeminal branches, and give the umber of twigs each branch has

Answer 3

Ophthalmic 5
Maxillary 3
Mandibular 3

Question 4

List the branches of the ophthalmic branch of the trigeminal nerve

Answer 4

Lacrimal
Supraorbital
Supratrochlear
Infratrochlear
External nasal nerve

Question 5

List the branches of the maxillary branch of the trigeminal nerve

Answer 5

Infraorbital
Zygomaticofacial nerve
Zygomaticotemporal nerve

Question 6

List the branches of the mandibular branch of the trigeminal nerve

Answer 6

Auriculotemporal
Buccal
Mental

Question 7

What area does the lacrimal nerve supply?

Answer 7

A small area of skin over the lateral part of the upper lid

Question 8

What does the supraorbital nerve supply and how does it reach this area?

Answer 8

The supraorbital nerve passes up through a notch/foramen to supply the forehead and scalp

Question 9

What is the course and destination of the supratrochlear nerve?

Answer 9

The supratrochlear nerve passes up on the medial side through the frontal notch and supplies the middle of the forehead

Question 10

What branches supply the upper lid conjunctiva?

Answer 10

Lacrimal
Supraorbital
Supratrochlear
Infratrochlear

Question 11

What does the infratrochlear nerve supply?

Answer 11

The skin on the medial part of the upper lid and the bridge of the nose

Question 12

What does the external nasal nerve supply?

Answer 12

The middle external nose down to the lip, ciliary branches supply the cornea

Question 13

Via what foramen does the infraorbital nerve exit? What does it divide into?

Answer 13

Exits via the infraorbital foramen.

Divides into palpebral, labial and nasal branches

Question 14

Where does the zygomaticofacial nerve exit? What does it supply?

Answer 14

The zygomaticofacial nerve exits via a foramen on the zygomatic bone and supplies the overlying skin

Question 15

Where does the zygomaticotemporal nerve exit and what does it supply?

Answer 15

Via the temporal fossa through a foramen in the temporal surface of the zygomatic bone. It supplies the hairless part of the temple.

Question 16

What is the course of the auriculotemporal nerve? What does it supply?

Answer 16

Passes around the neck of the mandible and ascends over the posterior root of the zygomatic arch.
The auricular part supplies the external acoustic meatus, tympanic membrane and skin of the auricle below.
The temporal part supplies the hairy skin over the temple

Question 17

What does the buccal nerve supply?

Answer 17

A thumb print over the cheek below the zygomatic bone

Question 18

What is the mental nerve a branch of? What does it supply?

Answer 18

A branch of the inferior alveolar nerve that breaks up into a tuft of branches that radiate to supply skin and mucous membrane of the area.