CNV (trigeminal)

Question 1

Modalities of CNV (trigeminal)

Answer 1

Somatic sensory (CNV1, CNV2, CNV3)
Somatic motor

Question 2

What are the 3 divisions of CNV (trigeminal)

Answer 2

CNV1 = ophthalmic division
CNV2 = maxillary division
CNV3 = mandibular division

Question 3

What does CNV1 supply somatic sensory innervation to?

Answer 3

Upper eyelid
Cornea
Conjunctiva
Tip of the nose

Question 4

What does CNV2 supply somatic sensory innervation to?

Answer 4

Lower eyelid
Maxilla
Ala of the nose
Skin/mucosa of the upper lip

Question 5

What does CNV3 supply somatic sensory innervation to?

Answer 5

Skin over the mandible and TMJ

Part of the external aspect of the tympanic membrane

Question 6

What does CNV3 supply somatic motor innervation to?

Answer 6

Masseter
Temporalis
Medial pterygoid
Lateral pterygoid (jaw opening)
Tensor veli palatini (soft palate muscle)
Tensor tympani (in middle ear)
Anterior belly of digastric

Question 7

Outflow of CNV (trigeminal) from the brain

Answer 7

Pons

Question 8

Foramina that CNV1 passes through

Answer 8

Superior orbital fissure

Question 9

Foramina that CNV2 passes through

Answer 9

Foramen rotundum

Question 10

Foramina that CNV23 passes through

Answer 10

Foramen ovale

Question 11

3 sensory nuclei associated with CNV (trigeminal)

Answer 11

Mesencephalic nucleus
Pontine trigeminal nucleus
Spinal trigeminal nucleus

Question 12

Function of mesencephalic nucleus in relation to CNV (trigeminal)

Answer 12

Proprioception information from chewing

Question 13

Function of pontine trigeminal nucleus (principle nucleus) in relation to CNV (trigeminal)

Answer 13

Fine touch

Vibration

Question 14

Function of spinal trigeminal nucleus in relation to CNV (trigeminal)

Answer 14

Pain

Temperature