1/52
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
CNs in midbrain
3, 4 (@ crus cerebri)
CNs in pons
5,6,7,8
CNs in medulla
9,10,11,12 (@ decussation of pyramids)
MNEMONIC FOR WHERE CNS EXIT
Christy Often Stays Frying For Ian Jay Howard
Christy
Cribriform plate - CN I
Often
Optic canal - CN II
Stays
Superior orbital fissure - CN 3, 4, V1, 6
Frying
Foramen rotondum - V2
For
Foramen ovale - V3
Ian
IAM - 7, 8
Jay
Jugular foramen - 9, 10, 11
Howard
Hypoglossal - 12
T or F: The reticular formation is loc across all levels
True
@ Lvl of the brainstem, ipsilat CN = __ hemiparesis
contralat
Lvls at the midbrain
Pyramids
Medial lemnisci
Olives
Inferior to the pons
Lvls at the pons
Facial colliculus
Trigeminal nuclei
Lvls at the medulla
Inferior colliculi
Superior colliculi
MNEMONIC FOR LVLS ACROSS BRAINSTEM
Peter Made Omelettes In Five Tasty Ingredients Sarap
Muscles innervated by CN III
Superior rectus
Inferior rectus
Medial rectus
Inferior oblique
Muscle innervated by CN IV
Superior oblique
Muscle innervated by CN VI
Lateral rectus
Medial eye deviation = __ CN problem = _ (struc & lvl affected)
VI
Facial colliculus
Level of pons
Lateral eye deviation = __ CN problem = _ (struc & lvl affected)
CN III
Edinger Westphal - Superior colliculus
Level of medulla
CN for constriction of pupils
CN III
CN for pupillary light reflex
CN III
Superior colliculus vs inferior colliculus in terms of function
Sup - visual
Inf - audition
CNV Sensory and motor divisions
Sensory to face
Motor for mastication
CNV: Sensory to face
Spinal - PAIN
Mesencephalic nucleus - PROPRIOCEPTION
Main nucleus - LIGHT TOUCH, PRESSURE
CNV: Mastication: All muscles close the mouth except for __
Lateral pterygoid
CNVII: Sensory and motor divisions
Motor to facial m
Sensory to ant 2/3 of tongue
Responsible for taste (tract)
Tractus solitarius
Divisions in terms of innervation of tractus solitarius
Ant 2/3: CNVII
Pos 1/3: CN IX
Base: Vagus
Facial colliculus & just inferior to pons
CNVIII
CNs responsible for swallowing
CNIX & X
Has CV function
CNX
Motor nucleus of CN IX & X
Nucleus ambiguus
Nucleus responsible for swallowing
Nucleus ambiguus
CN for uvula control
CNX
Problem of the uvula = devation to __ side
Stronger
R CNX problem = uvula towards __
Left
CNXI innervates
Traps & SCM
CNXII controls
Tongue
Probelm @ L CNXII = tongue deviates to __
Left (weaker side)
MPS Palpate mo Lang, Ouch Na
Midbrain - Mesecephalic n. - Proprioception
Pons - Principal/main nucleus - Light touch/pressure
Medulla - Spinal nucleus - Pain & temp
Lvl of Pons
Facial colliculus - CN 5,6,7,8 (spinal nucleus of CN5)
Trigeminal nucleus - Main sensory nucleus
The ff sx will be present at the level of the olives except for
A. deviation of uvula
B. Weak m of mastication
C. Swallowing problem
D. None of the above
B
Lateral corticospinal tract innervates __ & decussates @
Limbs
Medulla
Anterior corticospinal tract innervates __ & decussates @
Axial, gross
Spc
lateral medullary syndrome
P tosis - droop eye
A nhydrosis - dry?
M iosis - constrict
E exopthalmus - protruding eye
MEDULLA: Lvl of decussation of pyramids & medial lemnisci: Cavity, Nuclei, Motor tracts, Sensory tracts
MEDULLA: Lvl of olives (inf cereb peduncle), Inferior to the pons: Cavity, Nuclei, Motor tracts, Sensory tracts
PONS: Lvl of facial colliculus, trigeminal nuclei: Cavity, Nuclei, Motor tracts, Sensory tracts
MIDBRAIN: Lvl of sup & inf colliculi: Cavity, Nuclei, Motor tracts, Sensory tracts