Trigeminal nerve

Question 1

What are the 3 branches of trigeminal?

Answer 1

V1: opthalmic (Sensory information from the orbit)
V2: maxillary
V2: mandibular

Question 2

Whats the pathway of V1?

Answer 2

Enters through superior orbital fissure and branches into 3:

• Frontal nerve
• Lacrimal Nerve
• Nasociliarry nerve

Question 3

What does the frontal nerve of V1 branches into?

Answer 3

1. Supraorbital nerve

2. Supratrochlear nerve

Question 4

What is the branching pattern of the maxillary division?

Answer 4

• External surface of the left face

- Lateral wall of the nasal cavity

Question 5

Where is the ptergopalatine (Sphenopalatine) ganglion found? what is its specific role?

Answer 5

-Found in the ptergopalatine fossa and it the connection between the split of V2 as well as a connecting pathway for innervation

Question 6

What does V2 lateral zygomatic branches supply?

Answer 6

-Skin over temporal bones and zygomatic arch

Question 7

What does the medial branch of V2 supply?

Answer 7

-Mucosa of nasal cavity

Question 8

What does the nasopalatine nerve of V2 supply?

Answer 8

supplies the mucosa of the nasal septum

Question 9

What branches of V2 and the ptergoid ganglion supply mucousal lining of the roof of the mouth

Answer 9

• Greater and lesser palatine nerves

- emerge through greater and lesser palatine foramne

Question 10

Maxillary branch continues through to pass through the inferior orbital fissure? What does it branch into on the way?

Answer 10

• on the way it branches into alveolar branches that innervate the upper teeth and mucosal lining of the maxilla
• Then the branches goes through intraorbital foramen and terminates in palpibral, nasal and labial branches to supply cutanous innervation