Trigeminal

Question 1

The trigeminal ganglion lies in ____________.

Answer 1

Meckel’s cave

Question 2

The ophthalmic division exits the skull via the ?

Answer 2

superior orbital fissure

Question 3

The maxillary division exits skull via the ?

Answer 3

foramen rotundum

Question 4

The mandibular division exits via?

Answer 4

foramen ovale

Question 5

Primary afferent neurons are located where?

Answer 5

trigeminal ganglion

Question 6

Second order neurons cross midline (decussate) forming the __________________________ tract.

Answer 6

Anterior trigeminothalamic tract

Projects to contralateral cortex

Question 7

If you have damage to anterior trigeminothalamic tract can the posterior trigeminothalamic tract take over?

Answer 7

NO!

Question 8

Within the brainstem, the ascending branches terminate in the ______________________located in the pons.

Answer 8

principal sensory nucleus

Question 9

If you have dermatomal loss on face you know that you have a _____________ lesion not a lesion in the _________. (KNOW THIS)

Answer 9

peripheral nerve

brainstem

Question 10

If you have loss across multiple dermatomes in the face, you most likely have a __________ lesion. (KNOW IT)

Answer 10

Brainstem

Question 11

The trigeminal nerve also innervates what?

Answer 11

Supratentorial meninges
Temporomandibular joint
Oral cavity, tooth pulp, and periodontium

Question 12

Pain from hypertension. Feels like someone is squeezing my head

Answer 12

Tension headache

Question 13

Pain in head usually mostly one sided accompanied by vertigo, nausea, photophobia.

Answer 13

Migraine

Question 14

This pain is usually in men, above the eye (red eyes), so painful that patients usually end up in ER.

Answer 14

Cluster headache

Question 15

Headache connected to trigeminal nerve. Episodes of intense pain in the face. One of the most painful conditions known!

Answer 15

Trigeminal neuralgia

Question 16

First order neurons connect with the 2nd order neurons in the brainstem through different nuclei… Which nucleus transmits fine touch?

Answer 16

Principal sensory nucleus

Question 17

First order neurons connect with the 2nd order neurons in the brainstem through different nuclei… Which nucleus transmits pain and temp sensation?

Answer 17

Spinal nucleus

Question 18

First order neurons connect with the 2nd order neurons in the brainstem through different nuclei… Which nucleus forms reflex loop?

Answer 18

Mesencephalic nucleus

Question 19

First order neurons connect with the 2nd order neurons in the brainstem through different nuclei… Which nucleus sends motor neurons via V3 to innervate the muscles of mastication?

Answer 19

Motor nucleus

Question 20

Second order neurons cross the midline forming the _______________________.

Answer 20

Anterior trigeminothalamic tract

Question 21

Third order neurons project through the posterior limb of internal capsule and reach the ______________.

Answer 21

Sensory cortex