Neuro VII Flashcards
What inhibits primitive reflexes?
Frontal lobe development. This is why frontal lobe lesions can lead to loss of inhibition of these reflexes.
plantar reflex
dorsiflexion of large toe and fanning of other toes with plantar stimulation
Location of CN nerves
FA 477
Location of infundibulum
FA 477
location of mammillary body?
FA 477
location of CN nerves in midbrain/pons/medulla ETC
Rule of 4s 4 above pons (I-IV) 4 in pons (V-VIII) 4 in medulla (IX-XII) 4 CN nuclei
medial CN nuclei
III, IV, VI, XII “factors of 12”
Location of pineal body, superior and middle cerebellar peduncles
FA 477
Pineal gland function
1) melatonin secretion
2) circadian rhythms
Superior colliculi function
conjugate vertical gaze center
Inferior colliculi function
auditory
Parinaud syndrome
paralysis of conjugate vertical gaze due to lesion in superior colliculi
Parinaud syndrome causes
1) pinealoma
2) stroke
3) hydrocephalus
Where are CN nuclei generally located?
Tegmentum portion of brain stem.
CN XI nucleus location?
spinal cord
CN VII nucleus location?
pons
CN XII nucleus location?
medulla
CN IV nucleus location?
midbrain
CN IX nucleus location?
medulla
CN III nucleus location?
midbrain
CN V nucleus location?
pons
CN VI nucleus location?
pons
CN X nucleus location?
medulla
CN VIII nucleus location?
pons
lateral vs medial CN nuclei
lateral nuclei = sensory (aLar palte)
— sulcus limitans—
medial nuclei = motor (basal plate)
cribriform plate transmits…
CN I
optic canal transmits
CN II + ophthalmic artery
SOF transmits…
CN III, IV, VI, V1