Cranial Nerve Concepts Flashcards Preview

S&F: Exam 2 > Cranial Nerve Concepts > Flashcards

Flashcards in Cranial Nerve Concepts Deck (13):
0

UMN exceptions to general rule (Entirely contralateral)

Lower face (VII), trapezius (XI), genioglossus (XII)

1

UMN exceptions to general rule (Entirely ipsilateral)

SCM (XI)

2

LMN exception to general rule (Contralateral projection)

Superior oblique (IV)

3

Olfactory bulb projections

Temporal Lobe:

1. Pyriform Cortex- found in the parahippocampal gyrus; does NOT relay thru nuclues*

2. Entorhinal cortex- *First cortical area to degenerate in Alzheimer's

3. Amygdala- Limbic system structure

*Also relays to septal nuclei located in the frontal lobe

4

Edinger-Westphal nucleus

Paired nucleus in III that supplies parasympathetic info to the ciliary ganglion

5

Tic douloureux

"Trigeminal neuralgia"

-Paroxysms of excruciating pain usually in the maxillary portion of V

6

Nucleus caudalis

"Spinal nucleus of V"

-Relays info about pain and temp from the face

7

Medial longitudinal fasciculus

Coordinates eye movements by connecting the vertical and horizontal gaze centers w/ CNs III, IV, and VI

Travels just ventral to SC in medulla; ventral to PAG at more rostral levels

8

Alar pate

Embryological plate that differentiates into sensory componenets

9

Basal (anterior) plate

Embryological plate that differentiates into motor components

10

Pupillary Light Reflex

Light is shined in one eye

Info is sent to the pretectum and then to BOTH Edinger-Westphal nuclei

*Allows for a direct and consensual response

11

Damage to CN III axons

Ipsilateral oculomotor ophthalmoplegia and possible diplopia (if EYEBROW is RAISED)

12

Belle's Palsy

Inflammatory disorder of VII as it travels thru petrous part of temporal bone

-Ipilateral paralysis of total face
-Loss of taste to anterior 2/3
-Decreased salivation
-Hyperacusis