Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
26 Cards in this Set
- Front
- Back
|
Which Cranial nerves are associated with the eye?
|
III, IV, VI
|
|
|
An aneurysm in what vascular network often causes damage to the oculomotor nerve?
|
COW
|
|
|
What is the Motor supply of CN III (oculomotor)?
|
SR, IR, MR, IO, LPS
|
|
|
What is the parasympathetic supply of CN III?
|
Ciliaris and sphincter pupillae via cillary ganglion
|
|
|
What are the clinical presentations of CN III lesion?
|
-pupil dilation (mydriasis), no pupillary reflex
-no accommodation -lateral squint (down-out); diplopia -ptosis (droopy eye lid) |
|
|
Where does trochlea (CN IV) originate?
|
The midbrain
|
|
|
Which is the only cranial nerve to cross, resulting in contralateral symptoms after lesions?
|
CN IV (trochlea)
|
|
|
Which is the only nerve to come from the dorsal surface of the brainstem?
|
CN IV
|
|
|
What does the CN IV supply?
|
Superior Oblique
|
|
|
What is the clinical presentation of a CN IV lesion?
|
Lateral squint, slight elevation
Weak eye depression (when adducted); diplopia |
|
|
How do you test for CN IV lesion?
|
Adduct the eye and look down
|
|
|
Where does CN VI originate?
|
The pons
|
|
|
What structure does the CN VI run along in the cavernous sinus?
|
Internal carotid
|
|
|
What muscle does CN VI supply?
|
LR
|
|
|
What is the clinical presentation of a CN VI lesion?
|
Medial squint (esotropia); diplopia
|
|
|
What does V1 supply sensory?
|
Scalp, forhead, sinus, eyelids, nose, nasal cavity, eye, head blood vessels, meninges
Remember batman |
|
|
What is does V2 supply?
|
Purely sensory- upper teeth, plate, sinus, cheek, upper lip, nose, nasal cavity, oral cavity, pharynx
|
|
|
What does V3 supply?
|
Sensory- lower teeth, tongue, lower lip, chin, jaw, ear
Motor- Muscles of mastication, TVP, TensTymp, Mylohyoid, Ant Digastric |
|
|
What are the clinical issues of CN V lesion?
|
-sensory face loss
-mastication issues -headaches |
|
|
What is the parasympathetic supply of facial nerve?
|
pterygopalatine ganglion--> lacrimal gland
submandibular ganglion--> submandibular gland and sublingual gland |
|
|
What is the sensory components of CN VII?
|
Ear and taste tongue (ant)
|
|
|
What is the motor supply of CN VII?
|
muscles of facial expression, stapedius, stylohyoid, post digastric
|
|
|
What are the intracranial and extracrainal clinical lesions associated with lesions to CNVII?
|
Intracranial= sensory/visceral issues (+hyperacusis)/ motor (Bell palsy)
Extracranial= motor (bell palsy) |
|
|
After the nerve exits the stylomastoid foramen are they solely motor, sensory or para fibres?
|
Motor
|
|
|
What is the function of the Vestibulocohlear VIII?
|
Cochlear- Sensory hearing
Vestibular- Sensory balance, posture, ocular |
|
|
a
|
s
|
