Trigeminal nerve

Question 1

the largest division of trigeminal nerve is ____

Answer 1

mandibular nerve

Question 2

mandibular branch is a nerve of which pharyngeal arch?

Answer 2

1st pharyngeal arch

Question 3

sensory root of mandibular nerve arises from

Answer 3

trigeminal ganglion

Question 4

Difference between Mandibular and Maxillary nerve

Answer 4

Mandibular

• larger than maxillary
• a mixed nerve so has sensory and motor roots
• exits middle cranial fossa via foramen ovale

Maxillary

• smaller than mandibular
• purely sensory
• exits middle cranial fossa via foramen rotundum

Question 5

Where do sensory and motor roots of mandibular nerve join?

Answer 5

In infratemporal fossa after it has passed through foramen ovale

Question 6

True or false: the anterior division of mandibular nerve is mostly sensory and the posterior division is mostly motor.

Answer 6

False: The anterior division is mostly motor and the posterior division is mostly sensory.

Question 7

Nerve to medial pterygoid is given off by which part of mandibular nerve?

Answer 7

Its trunk before it divides into anterior and posterior divisions.

Question 8

Anterior division of mandibular nerve supplies all muscles of mastication except ______

Answer 8

Medial pterygoid

Question 9

Type of sensation lingual nerve gives to anterior 2/3rds of tongue

Answer 9

General sensation

Question 10

State relations of trunk of mandibular nerve

Answer 10

Anterior: otic ganglion
Posterior: middle meningeal artery
Medial: tensor veli palatini muscle
Lateral: lateral pterygoid

Question 11

Largest branch of the opthalmic nerve is

Answer 11

Frontal nerve

Question 12

Smallest branch of ophthalmic nerve

Answer 12

Lacrimal nerve

Question 13

Opthalmic nerve is what type of nerve?

Answer 13

Purely sensory

Question 14

How does opthalmic nerve exit cranial fossa?

Answer 14

Dividing into 3 branches which enter through superior orbital fissue to reach orbit cavity