Cranial nerve reflexs-Jaw jerk

Question 1

49F
Muscle weakness for 3 months
weakness in right hand
tripping
arm + leg = twitching + cramping
inc tone + fasciculations in lower extremity
atrophy in interosseous muscle + bilateral intrinsic muscle of feet

tap the chin - while the mouth in slighlty open - jaw jerk upward briskly

which nerve for the reflex ?

Answer 1

jaw jerk reflex (+)
afferent - trigeminal
efferent - trigeminal

Question 2

jaw jerk reflex + in whom ?

Answer 2

bilateral upper motor nueron lesions - ALS
Amyotropic lateral sclerosis ALS

Question 3

Jaw jerk reflex pathway ??

Answer 3

must from UW figure

Question 4

only tendon reflex above the plane of the foramen magnum ?

Answer 4

jae jerk reflex

Question 5

pathology of jaw jerk f=reflex
\\

Answer 5

bilateral lesions of the upper motor nueron
ALS
MS
pseudobulbar palsy

Question 6

pupillary light reflex - afferent & efferent ?

Answer 6

A - CN 2
E - CN 3

Question 7

A & E means ?

Answer 7

A - sensory
E - motor

Question 8

corneal reflex A & E ?

Answer 8

A - opthalmic branch of trigeminal
E - facial
temporal and zygomatic branches of orbicularis oculi
FA - 519

Question 9

Carotid sinus reflex effect ?

Answer 9

inc carotid sinus pressure
dec HR & BP

Question 10

Carotid sinus reflex E & A ?

Answer 10

A - 9 IX
E - Vagus 10 X

Question 11

Cough reflex A & E ?

Answer 11

A + E - X - vagus

Question 12

gag reflex E & A ?

Answer 12

A - IX
E - X
same as carotid sinus reflex

Question 13

vestibuloccular reflex?

Answer 13

A - VIII vestibular component
E - III IV VI

519 + UW box