Primitive reflexes

Question 1

Hand grasp

Answer 1

Persistence - cerebral palsy

Assess symmetry and intensity of flexion and extension of the upper extremity

Question 2

Disappearance of hand grasp

Answer 2

2-4 months

Question 3

stepping reflex

Answer 3

disappear after 1-2 months
persistence - cerebral palsy
absence is spinal lesion

Question 4

placing reaction

Answer 4

brain damage if absent
persistents til a year
flex hip and extend knee

Question 5

crossed extension reflex

Answer 5

pressure applied to inguinal area 
abduct
adduct and extend 
toes fan
disappear in 1 month
persistance - spinal lesion

Question 6

Fencing (asymmetric)

Answer 6

disappear in 4-6 mon

persistence cerebral palsy

Question 7

parachuting reaction

Answer 7

emerge @ 6 months and persists throughout life
absence indicates brain damage
diminished means hypertonicity

Question 8

superficial abdominal reflex

Answer 8

lower motor neuron lesion if asymmetric