By age 2 years in a normal infant,the stimulus that once caused the Babinski reflex now causes:
A) the knee jerk reflex.
B) the ankle jerk reflex.
C) the plantar reflex.
D) no reaction at all.

Question

Quizplus · Accepted Answer

The Babinski reflex is a normal reflex in infants up until about 2 years old. After this age, when the bottom of the foot is stroked, instead of the toes flexing upward (which is the Babinski reflex), the normal response is for the toes to curl down (which is the plantar reflex). Therefore, the correct answer is C) the plantar reflex.

By Age 2 Years in a Normal Infant,the Stimulus That