Cranial Nerves Flashcards
0
Q
II
A
Optic Nerve
- sensory impulses for vision
- originates: retina
- terminates: optic chiasm & optic tracts
1
Q
I
A
Olfactory
- sensory impulses for smell
- originates: nasal cavity
- terminates: olfactory bulb
2
Q
III
A
Oculomotor Nerve
- motor impulses for opening eyelid, pupil construction & lens adjustment
- originates: midbrain
- terminates: extrinsic & intrinsic eye muscles
3
Q
IV
A
Trochlear Nerve
-motor impulses for eye movement diagonally down to corner of eye
Originates: midbrain
Terminates: superior oblique eye muscle
4
Q
V
A
Trigeminal Nerve
- mixed nerve for sensations in face & for chewing
- largest cranial nerve containing ophthalmic, maxillary, & mandibular branches
5
Q
VI
A
Abducens
- motor impulses that rotate the eye laterally (if damaged only medial)
- originates: pons
- terminates: lateral rectus eye muscle
6
Q
VII
A
Facial Nerve
-mixed
Controls:
- facial expression
- tear glands
- nasal glands
- submandibular & sublingual salivary glands
- sense of taste
Damages can cause Bell’s Palsy
7
Q
VIII
A
Vestibulocochelear (Auditory) Nerve
-sensory impulses that allow you to hear
Damages result in:
- deafness
- dizziness
- loss of balance
- side to side eye movement
8
Q
IX
A
Glossopharyngeal Nerve
-mixed nerve
Controls:
- swallowing/ salivating
- gagging
- sensations from tongue & outer ear
Damages result in:
-loss of taste sensation & swallowing
9
Q
X
A
Vagus Nerve
-mixed
Controls:
- pulmonary, cardiovascular, gastrointestinal regulation
- swallowing, taste & speech
- hunger, fullness, discomfort
Damages:
-fatal if both nerves are damaged
10
Q
XI
A
Spinal Accessory Nerve
-motor
Controls:
- swallowing
- head, neck & shoulder movements
11
Q
XII
A
Hypoglossal Nerve
-motor
Controls:
- tongue movements
- speech
- food manipulation
- swallowing
