AP PSYCHOLOGY

DEVELOPMENTAL PSYCHOLOGY

NEWBORN DEVELOPMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which reflex is when the infant’s toes fan out and foot twists in?
A
Rootin
B
Moro
C
Babinski
D
Grasping
Explanation: 

Detailed explanation-1: -The Babinski reflex occurs after the sole of the foot has been firmly stroked. The big toe then moves upward or toward the top surface of the foot. The other toes fan out.

Detailed explanation-2: -Babinski reflex When the sole of the foot is firmly stroked, the big toe bends back toward the top of the foot and the other toes fan out. This is a normal reflex up to about 2 years of age.

Detailed explanation-3: -The abnormal plantar reflex, or Babinski reflex, is the elicitation of toe extension from the “wrong” receptive field, that is, the sole of the foot. Thus a noxious stimulus to the sole of the foot produces extension of the great toe instead of the normal flexion response.

Detailed explanation-4: -Babinski’s sign is a neuro-pathological cue embedded within the Plantar Reflex of the foot. Elicited by a blunt stimulus to the sole of the foot, the normal adult Plantar Reflex presents as a downward flexion of the toes toward the source of the stimulus.

There is 1 question to complete.