Neuroanatomy 4

Question 1

All cranial nerves exit anteriorly except ___?

Answer 1

IV

Question 2

Where will the soma of sensory nerve cells be found?

Answer 2

In ganglia outside of the CNS

Question 3

What is the only sensory modality that does not synapse in the thalamus prior to reaching the cortex?

Answer 3

CN I

Question 4

Name a purely sensory cranial nerve

Answer 4

CN I (olfactory nerve)

Question 5

Name the motor nerves

Answer 5

CN III, IV, VI, IX, XII

Question 6

During development, the position of motor and sensory regions next to which part of the brain change?

Answer 6

The motor and sensory regions next to the 4th ventricle

Question 7

The occulomotor nucleus is next to which nucleus?

Answer 7

The edinger-westphal nucleus

Question 8

Edinger-westphal nucleus, sympathetic or parasympathetic?

Answer 8

Parasympathetic

Question 9

Nerve found in the superior colliculus?

Answer 9

Occulomotor

Question 10

Nerve found in the inferior colliculus?

Answer 10

Trochlear

Question 11

Which nerve supplies the superior oblique?

Answer 11

Trochlear nerve (CNIV)

Question 12

Which is the only cranial nerve to exit posteriorly?

Answer 12

CNIV (trochlear)

Question 13

Where is the abducens nuclei located?

Answer 13

In the pons, on the floor of the fourth ventricle

Question 14

Where does the spinal accessory nerve arise from?

Answer 14

The cervical spinal cord

Question 15

Name the mixed nerves

Answer 15

CNs V, VII, IX and X

Question 16

Somatosensation of face: discriminative touch, vibration sense, pain, temperature

Answer 16

CN V (trigeminal nerve)

Question 17

Proprioception associated with chewing (TMJ, muscles of mastication, teeth)

Answer 17

CN V (trigeminal nerve)

Question 18

Motor control: muscles of mastication, tensor tympani, mylohyoid, ant. belly of digastric, tensor veli palatini

Answer 18

CN V (trigeminal nerve)

Question 19

Which trigeminal nucleus is responsible for proprioception info from chewing muscles?

Answer 19

Mesencephalic nucleus

Question 20

Which trigeminal nucleus is responsible for pain and temperature

Answer 20

Spinal nucles

Question 21

Which trigeminal nucleus is responsible for discriminative touch and vibration?

Answer 21

Pontine nucleus (principal nucleus)

Question 22

Where does the sensory nucleus of the trigeminal run to/from?

Answer 22

Runs from the midbrain down to the upper 2 segments of the cervical spinal cord

Question 23

Why are jaw reflexes quick? (In terms of nuclei)

Answer 23

The mesencephalic nucleus (proprioception) is really close to the motor nucleus

Question 24

Which nucleus is special because it is the only site where the primary afferent neurones live INSIDE the CNS?

Answer 24

Mesencephalic nucleus

Question 25

The trigeminal spinal nucleus is located in the spinal tract, what does the spinal tract merge with?

Answer 25

The spinal tract merges with the dorsal horn of the upper cervical cord

Question 26

Where is the pontine nucleus?

Answer 26

The pons

Question 27

Where is the spinal nucleus?

Answer 27

The medulla

Question 28

Where is the mesencephalic nucleus?

Answer 28

In the midbrain